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-rw-r--r--thirdparty/stb/tests/stb.c3323
1 files changed, 3323 insertions, 0 deletions
diff --git a/thirdparty/stb/tests/stb.c b/thirdparty/stb/tests/stb.c
new file mode 100644
index 0000000..e0731d6
--- /dev/null
+++ b/thirdparty/stb/tests/stb.c
@@ -0,0 +1,3323 @@
+/*
+ * Unit tests for "stb.h"
+ */
+
+//#include <windows.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#ifdef _WIN32
+#include <crtdbg.h>
+#endif
+
+#define STB_STUA
+//#define STB_FASTMALLOC
+#ifdef _DEBUG
+#define STB_MALLOC_WRAPPER_DEBUG
+#endif
+#define STB_NPTR
+#define STB_DEFINE
+#include "stb.h"
+
+//#include "stb_file.h"
+//#include "stb_pixel32.h"
+
+//#define DEBUG_BLOCK
+#ifdef DEBUG_BLOCK
+#include <conio.h>
+#endif
+
+#ifdef STB_FASTMALLOC
+#error "can't use FASTMALLOC with threads"
+#endif
+
+int count;
+void c(int truth, char *error)
+{
+ if (!truth) {
+ fprintf(stderr, "Test failed: %s\n", error);
+ ++count;
+ }
+}
+
+
+#if 0
+void show(void)
+{
+ #ifdef _WIN32
+ SYSTEM_INFO x;
+ GetSystemInfo(&x);
+ printf("%d\n", x.dwPageSize);
+ #endif
+}
+#endif
+
+void test_classes(void)
+{
+ unsigned char size_base[32], size_shift[32];
+ int class_to_pages[256];
+ int class_to_size[256], cl;
+ int lg, size, wasted_pages;
+ int kAlignShift = 3;
+ int kAlignment = 1 << kAlignShift;
+ int kMaxSize = 8 * 4096;
+ int kPageShift = 12;
+ int kPageSize = (1 << kPageShift);
+ int next_class = 1;
+ int alignshift = kAlignShift;
+ int last_lg = -1;
+
+ for (lg = 0; lg < kAlignShift; lg++) {
+ size_base[lg] = 1;
+ size_shift[lg] = kAlignShift;
+ }
+
+ for (size = kAlignment; size <= kMaxSize; size += (1 << alignshift)) {
+ int lg = stb_log2_floor(size);
+ if (lg > last_lg) {
+ // Increase alignment every so often.
+ //
+ // Since we double the alignment every time size doubles and
+ // size >= 128, this means that space wasted due to alignment is
+ // at most 16/128 i.e., 12.5%. Plus we cap the alignment at 256
+ // bytes, so the space wasted as a percentage starts falling for
+ // sizes > 2K.
+ if ((lg >= 7) && (alignshift < 8)) {
+ alignshift++;
+ }
+ size_base[lg] = next_class - ((size-1) >> alignshift);
+ size_shift[lg] = alignshift;
+ }
+
+ class_to_size[next_class] = size;
+ last_lg = lg;
+
+ next_class++;
+ }
+
+ // Initialize the number of pages we should allocate to split into
+ // small objects for a given class.
+ wasted_pages = 0;
+ for (cl = 1; cl < next_class; cl++) {
+ // Allocate enough pages so leftover is less than 1/8 of total.
+ // This bounds wasted space to at most 12.5%.
+ size_t psize = kPageSize;
+ const size_t s = class_to_size[cl];
+ while ((psize % s) > (psize >> 3)) {
+ psize += kPageSize;
+ }
+ class_to_pages[cl] = psize >> kPageShift;
+ wasted_pages += psize;
+ }
+
+ printf("TCMalloc can waste as much as %d memory on one-shot allocations\n", wasted_pages);
+
+
+ return;
+}
+
+
+void test_script(void)
+{
+ stua_run_script(
+ "var g = (2+3)*5 + 3*(2+1) + ((7)); \n"
+ "func sprint(x) _print(x) _print(' ') x end;\n"
+ "func foo(y) var q = func(x) sprint(x) end; q end;\n "
+ "var z=foo(5); z(77);\n"
+ "func counter(z) func(x) z=z+1 end end\n"
+ "var q=counter(0), p=counter(5);\n"
+ "sprint(q()) sprint(p()) sprint(q()) sprint(p()) sprint(q()) sprint(p())\n"
+ "var x=2222;\n"
+ "if 1 == 2 then 3333 else 4444 end; => x; sprint(x);\n"
+ "var x1 = sprint(1.5e3); \n"
+ "var x2 = sprint(.5); \n"
+ "var x3 = sprint(1.); \n"
+ "var x4 = sprint(1.e3); \n"
+ "var x5 = sprint(1e3); \n"
+ "var x6 = sprint(0.5e3); \n"
+ "var x7 = sprint(.5e3); \n"
+ " func sum(x,y) x+y end \n"
+ " func sumfunc(a) sum+{x=a} end \n"
+ " var q = sumfunc(3) \n"
+ " var p = sumfunc(20) \n"
+ " var d = sprint(q(5)) - sprint(q(8)) \n"
+ " var e = sprint(p(5)) - sprint(p(8)) \n"
+ " func test3(x) \n"
+ " sprint(x) \n"
+ " x = x+3 \n"
+ " sprint(x) \n"
+ " x+5 \n"
+ " end \n"
+ " var y = test3(4); \n"
+ " func fib(x) \n"
+ " if x < 3 then \n"
+ " 1 \n"
+ " else \n"
+ " fib(x-1) + fib(x-2); \n"
+ " end \n"
+ " end \n"
+ " \n"
+ " func fib2(x) \n"
+ " var a=1 \n"
+ " var b=1 \n"
+ " sprint(a) \n"
+ " sprint(b) \n"
+ " while x > 2 do \n"
+ " var c=a+b \n"
+ " a=b \n"
+ " b=c \n"
+ " sprint(b) \n"
+ " x=x-1 \n"
+ " end \n"
+ " b \n"
+ " end \n"
+ " \n"
+ " func assign(z) \n"
+ " var y = { 'this', 'is', 'a', 'lame', 'day', 'to', 'die'} \n"
+ " y[3] = z \n"
+ " var i = 0 \n"
+ " while y[i] != nil do \n"
+ " sprint(y[i]) \n"
+ " i = i+1 \n"
+ " end \n"
+ " end \n"
+ " \n"
+ " sprint(fib(12)); \n"
+ " assign(\"good\"); \n"
+ " fib2(20); \n"
+ " sprint('ok'); \n"
+ " sprint(-5); \n"
+ " // final comment with no newline"
+ );
+}
+
+#ifdef STB_THREADS
+extern void __stdcall Sleep(unsigned long);
+
+void * thread_1(void *x)
+{
+ Sleep(80);
+ printf("thread 1\n"); fflush(stdout);
+ return (void *) 2;
+}
+
+void * thread_2(void *y)
+{
+ stb_work(thread_1, NULL, y);
+ Sleep(50);
+ printf("thread 2\n"); fflush(stdout);
+ return (void *) 3;
+}
+
+stb_semaphore stest;
+stb_mutex mutex;
+volatile int tc1, tc2;
+
+void *thread_3(void *p)
+{
+ stb_mutex_begin(mutex);
+ ++tc1;
+ stb_mutex_end(mutex);
+ stb_sem_waitfor(stest);
+ stb_mutex_begin(mutex);
+ ++tc2;
+ stb_mutex_end(mutex);
+ return NULL;
+}
+
+void test_threads(void)
+{
+ volatile int a=0,b=0;
+ //stb_work_numthreads(2);
+ stb_work(thread_2, (void *) &a, (void *) &b);
+ while (a==0 || b==0) {
+ Sleep(10);
+ //printf("a=%d b=%d\n", a, b);
+ }
+ c(a==2 && b == 3, "stb_thread");
+ stb_work_numthreads(4);
+ stest = stb_sem_new(8);
+ mutex = stb_mutex_new();
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ while (tc1 < 4)
+ Sleep(10);
+ c(tc1 == 4, "stb_work 1");
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ Sleep(40);
+ while (tc1 != 8 || tc2 != 8)
+ Sleep(10);
+ c(tc1 == 8 && tc2 == 8, "stb_work 2");
+ stb_work_numthreads(2);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ stb_work(thread_3, NULL, NULL);
+ while (tc1 < 10)
+ Sleep(10);
+ c(tc1 == 10, "stb_work 1");
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+ stb_sem_release(stest);
+
+ Sleep(100);
+ stb_sem_delete(stest);
+ stb_mutex_delete(mutex);
+}
+#else
+void test_threads(void)
+{
+}
+#endif
+
+void *thread4(void *p)
+{
+ return NULL;
+}
+
+#ifdef STB_THREADS
+stb_threadqueue *tq;
+stb_sync synch;
+stb_mutex msum;
+
+volatile int thread_sum;
+
+void *consume1(void *p)
+{
+ volatile int *q = (volatile int *) p;
+ for(;;) {
+ int z;
+ stb_threadq_get_block(tq, &z);
+ stb_mutex_begin(msum);
+ thread_sum += z;
+ *q += z;
+ stb_mutex_end(msum);
+ stb_sync_reach(synch);
+ }
+}
+
+void test_threads2(void)
+{
+ int array[256],i,n=0;
+ volatile int which[4];
+ synch = stb_sync_new();
+ stb_sync_set_target(synch,2);
+ stb_work_reach(thread4, NULL, NULL, synch);
+ stb_sync_reach_and_wait(synch);
+ printf("ok\n");
+
+ tq = stb_threadq_new(4, 1, TRUE,TRUE);
+ msum = stb_mutex_new();
+ thread_sum = 0;
+ stb_sync_set_target(synch, 65);
+ for (i=0; i < 4; ++i) {
+ which[i] = 0;
+ stb_create_thread(consume1, (int *) &which[i]);
+ }
+ for (i=1; i <= 64; ++i) {
+ array[i] = i;
+ n += i;
+ stb_threadq_add_block(tq, &array[i]);
+ }
+ stb_sync_reach_and_wait(synch);
+ stb_barrier();
+ c(thread_sum == n, "stb_threadq 1");
+ c(which[0] + which[1] + which[2] + which[3] == n, "stb_threadq 2");
+ printf("(Distribution: %d %d %d %d)\n", which[0], which[1], which[2], which[3]);
+
+ stb_sync_delete(synch);
+ stb_threadq_delete(tq);
+ stb_mutex_delete(msum);
+}
+#else
+void test_threads2(void)
+{
+}
+#endif
+
+char tc[] = "testing compression test quick test voila woohoo what the hell";
+
+char storage1[1 << 23];
+int test_compression(char *buffer, int length)
+{
+ char *storage2;
+ int c_len = stb_compress(storage1, buffer, length);
+ int dc_len;
+ printf("Compressed %d to %d\n", length, c_len);
+ dc_len = stb_decompress_length(storage1);
+ storage2 = malloc(dc_len);
+ dc_len = stb_decompress(storage2, storage1, c_len);
+ if (dc_len != length) { free(storage2); return -1; }
+ if (memcmp(buffer, storage2, length) != 0) { free(storage2); return -1; }
+ free(storage2);
+ return c_len;
+}
+
+#if 0
+int test_en_compression(char *buffer, int length)
+{
+ int c_len = stb_en_compress(storage1, buffer, length);
+ int dc_len;
+ printf("Encompressed %d to %d\n", length, c_len);
+ dc_len = stb_en_decompress(storage2, storage1, c_len);
+ if (dc_len != length) return -1;
+ if (memcmp(buffer, storage2, length) != 0) return -1;
+ return c_len;
+}
+#endif
+
+#define STR_x "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+#define STR_y "yyyyyyyyyyyyyyyyyy"
+
+#define STR_xy STR_x STR_y
+#define STR_xyyxy STR_xy STR_y STR_xy
+
+#define STR_1 "testing"
+#define STR_2 STR_xyyxy STR_xy STR_xyyxy STR_xyyxy STR_xy STR_xyyxy
+#define STR_3 "buh"
+
+char buffer[] = STR_1 "\r\n" STR_2 STR_2 STR_2 "\n" STR_3;
+char str1[] = STR_1;
+char str2[] = STR_2 STR_2 STR_2;
+char str3[] = STR_3;
+
+int sum(short *s)
+{
+ int i,total=0;
+ for (i=0; i < stb_arr_len(s); ++i)
+ total += s[i];
+ return total;
+}
+
+stb_uint stb_adler32_old(stb_uint adler32, stb_uchar *buffer, stb_uint buflen)
+{
+ const stb_uint ADLER_MOD = 65521;
+ stb_uint s1 = adler32 & 0xffff;
+ stb_uint s2 = adler32 >> 16;
+
+ while (buflen-- > 0) { // NOTE: much faster implementations are possible!
+ s1 += *buffer++; if (s1 > ADLER_MOD) s1 -= ADLER_MOD;
+ s2 += s1 ; if (s2 > ADLER_MOD) s2 -= ADLER_MOD;
+ }
+ return (s2 << 16) + s1;
+}
+
+static int sample_test[3][5] =
+{
+ { 1,2,3,4,5 },
+ { 6,7,8,9,10, },
+ { 11,12,13,14,15 },
+};
+
+typedef struct { unsigned short x,y,z; } struct1;
+typedef struct { double a; int x,y,z; } struct2;
+
+char *args_raw[] = { "foo", "-dxrf", "bar", "-ts" };
+char *args[8];
+
+void do_compressor(int,char**);
+void test_sha1(void);
+
+int alloc_num, alloc_size;
+void dumpfunc(void *ptr, int sz, char *file, int line)
+{
+ printf("%p (%6d) -- %3d:%s\n", ptr, sz, line, file);
+ alloc_size += sz;
+ alloc_num += 1;
+}
+
+char *expects(stb_matcher *m, char *s, int result, int len, char *str)
+{
+ int res2,len2=0;
+ res2 = stb_lex(m, s, &len2);
+ c(result == res2 && len == len2, str);
+ return s + len;
+}
+
+void test_lex(void)
+{
+ stb_matcher *m = stb_lex_matcher();
+ // tok_en5 .3 20.1 20. .20 .1
+ char *s = "tok_en5.3 20.1 20. .20.1";
+
+ stb_lex_item(m, "[a-zA-Z_][a-zA-Z0-9_]*", 1 );
+ stb_lex_item(m, "[0-9]*\\.?[0-9]*" , 2 );
+ stb_lex_item(m, "[\r\n\t ]+" , 3 );
+ stb_lex_item(m, "." , -99 );
+ s=expects(m,s,1,7, "stb_lex 1");
+ s=expects(m,s,2,2, "stb_lex 2");
+ s=expects(m,s,3,1, "stb_lex 3");
+ s=expects(m,s,2,4, "stb_lex 4");
+ s=expects(m,s,3,1, "stb_lex 5");
+ s=expects(m,s,2,3, "stb_lex 6");
+ s=expects(m,s,3,1, "stb_lex 7");
+ s=expects(m,s,2,3, "stb_lex 8");
+ s=expects(m,s,2,2, "stb_lex 9");
+ s=expects(m,s,0,0, "stb_lex 10");
+ stb_matcher_free(m);
+}
+
+typedef struct Btest
+{
+ struct Btest stb_bst_fields(btest_);
+ int v;
+} Btest;
+
+stb_bst(Btest, btest_, BT2,bt2,v, int, a - b)
+
+void bst_test(void)
+{
+ Btest *root = NULL, *t;
+ int items[500], sorted[500];
+ int i,j,z;
+ for (z=0; z < 10; ++z) {
+ for (i=0; i < 500; ++i)
+ items[i] = stb_rand() & 0xfffffff;
+
+ // check for collisions, and retrry if so
+ memcpy(sorted, items, sizeof(sorted));
+ qsort(sorted, 500, sizeof(sorted[0]), stb_intcmp(0));
+ for (i=1; i < 500; ++i)
+ if (sorted[i-1] == sorted[i])
+ break;
+ if (i != 500) { --z; break; }
+
+ for (i=0; i < 500; ++i) {
+ t = malloc(sizeof(*t));
+ t->v = items[i];
+ root = btest_insert(root, t);
+ #ifdef STB_DEBUG
+ btest__validate(root,1);
+ #endif
+ for (j=0; j <= i; ++j)
+ c(btest_find(root, items[j]) != NULL, "stb_bst 1");
+ for ( ; j < 500; ++j)
+ c(btest_find(root, items[j]) == NULL, "stb_bst 2");
+ }
+
+ t = btest_first(root);
+ for (i=0; i < 500; ++i)
+ t = btest_next(root,t);
+ c(t == NULL, "stb_bst 5");
+ t = btest_last(root);
+ for (i=0; i < 500; ++i)
+ t = btest_prev(root,t);
+ c(t == NULL, "stb_bst 6");
+
+ memcpy(sorted, items, sizeof(sorted));
+ qsort(sorted, 500, sizeof(sorted[0]), stb_intcmp(0));
+ t = btest_first(root);
+ for (i=0; i < 500; ++i) {
+ assert(t->v == sorted[i]);
+ t = btest_next(root, t);
+ }
+ assert(t == NULL);
+
+ if (z==1)
+ stb_reverse(items, 500, sizeof(items[0]));
+ else if (z)
+ stb_shuffle(items, 500, sizeof(items[0]), stb_rand());
+
+ for (i=0; i < 500; ++i) {
+ t = btest_find(root, items[i]);
+ assert(t != NULL);
+ root = btest_remove(root, t);
+ c(btest_find(root, items[i]) == NULL, "stb_bst 5");
+ #ifdef STB_DEBUG
+ btest__validate(root, 1);
+ #endif
+ for (j=0; j <= i; ++j)
+ c(btest_find(root, items[j]) == NULL, "stb_bst 3");
+ for ( ; j < 500; ++j)
+ c(btest_find(root, items[j]) != NULL, "stb_bst 4");
+ free(t);
+ }
+ }
+}
+
+extern void stu_uninit(void);
+
+stb_define_sort(sort_int, int, *a < *b)
+
+stb_rand_define(prime_rand, 1)
+void test_packed_floats(void);
+void test_parser_generator(void);
+
+void rec_print(stb_dirtree2 *d, int depth)
+{
+ int i;
+ for (i=0; i < depth; ++i) printf(" ");
+ printf("%s (%d)\n", d->relpath, stb_arr_len(d->files));
+ for (i=0; i < stb_arr_len(d->subdirs); ++i)
+ rec_print(d->subdirs[i], depth+1);
+ d->weight = (float) stb_arr_len(d->files);
+}
+
+#ifdef MAIN_TEST
+int main(int argc, char **argv)
+{
+ char *z;
+ stb__wchar buffer7[1024],buffer9[1024];
+ char buffer8[4096];
+ FILE *f;
+ char *p1 = "foo/bar\\baz/test.xyz";
+ char *p2 = "foo/.bar";
+ char *p3 = "foo.bar";
+ char *p4 = "foo/bar";
+ char *wildcards[] = { "*foo*", "*bar", "baz", "*1*2*3*", "*/CVS/repository", "*oof*" };
+ char **s;
+ char buf[256], *p;
+ int n,len2,*q,i;
+ stb_matcher *mt=NULL;
+
+ if (argc > 1) {
+ do_compressor(argc,argv);
+ return 0;
+ }
+ test_classes();
+ //show();
+
+ //stb_malloc_check_counter(2,2);
+ //_CrtSetBreakAlloc(10398);
+
+ stbprint("Checking {!if} the {$fancy} print function {#works}? - should\n");
+ stbprint(" - align\n");
+ stbprint("But {#3this}} {one}} - shouldn't\n");
+
+ #if 0
+ {
+ int i;
+ char **s = stb_readdir_recursive("/sean", NULL);
+ stb_dirtree *d = stb_dirtree_from_files_relative("", s, stb_arr_len(s));
+ stb_dirtree **e;
+ rec_print(d, 0);
+ e = stb_summarize_tree(d,12,4);
+ for (i=0; i < stb_arr_len(e); ++i) {
+ printf("%s\n", e[i]->fullpath);
+ }
+ stb_arr_free(e);
+
+ stb_fatal("foo");
+ }
+ #endif
+
+ stb_("Started stb.c");
+ test_threads2();
+ test_threads();
+
+ for (i=0; i < 1023 && 5+77*i < 0xd800; ++i)
+ buffer7[i] = 5+77*i;
+ buffer7[i++] = 0xd801;
+ buffer7[i++] = 0xdc02;
+ buffer7[i++] = 0xdbff;
+ buffer7[i++] = 0xdfff;
+ buffer7[i] = 0;
+ p = stb_to_utf8(buffer8, buffer7, sizeof(buffer8));
+ c(p != NULL, "stb_to_utf8");
+ if (p != NULL) {
+ stb_from_utf8(buffer9, buffer8, sizeof(buffer9)/2);
+ c(!memcmp(buffer7, buffer9, i*2), "stb_from_utf8");
+ }
+
+ z = "foo.*[bd]ak?r";
+ c( stb_regex(z, "muggle man food is barfy") == 1, "stb_regex 1");
+ c( stb_regex("foo.*bar", "muggle man food is farfy") == 0, "stb_regex 2");
+ c( stb_regex("[^a-zA-Z]foo[^a-zA-Z]", "dfoobar xfood") == 0, "stb_regex 3");
+ c( stb_regex(z, "muman foob is bakrfy") == 1, "stb_regex 4");
+ z = "foo.*[bd]bk?r";
+ c( stb_regex(z, "muman foob is bakrfy") == 0, "stb_regex 5");
+ c( stb_regex(z, "muman foob is bbkrfy") == 1, "stb_regex 6");
+
+ stb_regex(NULL,NULL);
+
+ #if 0
+ test_parser_generator();
+ stb_wrapper_listall(dumpfunc);
+ if (alloc_num)
+ printf("Memory still in use: %d allocations of %d bytes.\n", alloc_num, alloc_size);
+ #endif
+
+ test_script();
+ p = stb_file("sieve.stua", NULL);
+ if (p) {
+ stua_run_script(p);
+ free(p);
+ }
+ stua_uninit();
+
+ //stb_wrapper_listall(dumpfunc);
+ printf("Memory still in use: %d allocations of %d bytes.\n", alloc_num, alloc_size);
+
+ c(stb_alloc_count_alloc == stb_alloc_count_free, "stb_alloc 0");
+
+ bst_test();
+
+ c(stb_alloc_count_alloc == stb_alloc_count_free, "stb_alloc 0");
+
+#if 0
+ // stb_block
+ {
+ int inuse=0, freespace=0;
+ int *x = malloc(10000*sizeof(*x));
+ stb_block *b = stb_block_new(1, 10000);
+ #define BLOCK_COUNT 1000
+ int *p = malloc(sizeof(*p) * BLOCK_COUNT);
+ int *l = malloc(sizeof(*l) * BLOCK_COUNT);
+ int i, n, k = 0;
+
+ memset(x, 0, 10000 * sizeof(*x));
+
+ n = 0;
+ while (n < BLOCK_COUNT && k < 1000) {
+ l[n] = 16 + (rand() & 31);
+ p[n] = stb_block_alloc(b, l[n], 0);
+ if (p[n] == 0)
+ break;
+ inuse += l[n];
+
+ freespace = 0;
+ for (i=0; i < b->len; ++i)
+ freespace += b->freelist[i].len;
+ assert(freespace + inuse == 9999);
+
+ for (i=0; i < l[n]; ++i)
+ x[ p[n]+i ] = p[n];
+ ++n;
+
+ if (k > 20) {
+ int sz;
+ i = (stb_rand() % n);
+ sz = l[i];
+ stb_block_free(b, p[i], sz);
+ inuse -= sz;
+ p[i] = p[n-1];
+ l[i] = l[n-1];
+ --n;
+
+ freespace = 0;
+ for (i=0; i < b->len; ++i)
+ freespace += b->freelist[i].len;
+ assert(freespace + inuse == 9999);
+ }
+
+
+ ++k;
+
+ // validate
+ if ((k % 50) == 0) {
+ int j;
+ for (j=0; j < n; ++j) {
+ for (i=0; i < l[j]; ++i)
+ assert(x[ p[j]+i ] == p[j]);
+ }
+ }
+
+ if ((k % 200) == 0) {
+ stb_block_compact_freelist(b);
+ }
+ }
+
+ for (i=0; i < n; ++i)
+ stb_block_free(b, p[i], l[i]);
+
+ stb_block_destroy(b);
+ free(p);
+ free(l);
+ free(x);
+ }
+
+ blockfile_test();
+#endif
+
+ mt = stb_lex_matcher();
+ for (i=0; i < 5; ++i)
+ stb_lex_item_wild(mt, wildcards[i], i+1);
+
+ c(1==stb_lex(mt, "this is a foo in the middle",NULL), "stb_matcher_match 1");
+ c(0==stb_lex(mt, "this is a bar in the middle",NULL), "stb_matcher_match 2");
+ c(0==stb_lex(mt, "this is a baz in the middle",NULL), "stb_matcher_match 3");
+ c(2==stb_lex(mt, "this is a bar",NULL), "stb_matcher_match 4");
+ c(0==stb_lex(mt, "this is a baz",NULL), "stb_matcher_match 5");
+ c(3==stb_lex(mt, "baz",NULL), "stb_matcher_match 6");
+ c(4==stb_lex(mt, "1_2_3_4",NULL), "stb_matcher_match 7");
+ c(0==stb_lex(mt, "1 3 3 3 3 2 ",NULL), "stb_matcher_match 8");
+ c(4==stb_lex(mt, "1 3 3 3 2 3 ",NULL), "stb_matcher_match 9");
+ c(5==stb_lex(mt, "C:/sean/prj/old/gdmag/mipmap/hqp/adol-c/CVS/Repository",NULL), "stb_matcher_match 10");
+ stb_matcher_free(mt);
+
+ {
+ #define SSIZE 500000
+ static int arr[SSIZE],arr2[SSIZE];
+ int i,good;
+ for (i=0; i < SSIZE; ++i)
+ arr2[i] = stb_rand();
+ memcpy(arr,arr2,sizeof(arr));
+ printf("stb_define_sort:\n");
+ sort_int(arr, SSIZE);
+ good = 1;
+ for (i=0; i+1 < SSIZE; ++i)
+ if (arr[i] > arr[i+1])
+ good = 0;
+ c(good, "stb_define_sort");
+ printf("qsort:\n");
+ qsort(arr2, SSIZE, sizeof(arr2[0]), stb_intcmp(0));
+ printf("done\n");
+ // check for bugs
+ memset(arr, 0, sizeof(arr[0]) * 1000);
+ sort_int(arr, 1000);
+ }
+
+
+ c(stb_alloc_count_alloc == stb_alloc_count_free, "stb_alloc -2");
+
+ c( stb_is_prime( 2), "stb_is_prime 1");
+ c( stb_is_prime( 3), "stb_is_prime 2");
+ c( stb_is_prime( 5), "stb_is_prime 3");
+ c( stb_is_prime( 7), "stb_is_prime 4");
+ c(!stb_is_prime( 9), "stb_is_prime 5");
+ c( stb_is_prime(11), "stb_is_prime 6");
+ c(!stb_is_prime(25), "stb_is_prime 7");
+ c(!stb_is_prime(27), "stb_is_prime 8");
+ c( stb_is_prime(29), "stb_is_prime 9");
+ c( stb_is_prime(31), "stb_is_prime a");
+ c(!stb_is_prime(33), "stb_is_prime b");
+ c(!stb_is_prime(35), "stb_is_prime c");
+ c(!stb_is_prime(36), "stb_is_prime d");
+
+ for (n=7; n < 64; n += 3) {
+ int i;
+ stb_perfect s;
+ unsigned int *p = malloc(n * sizeof(*p));
+ for (i=0; i < n; ++i)
+ p[i] = i*i;
+ c(stb_perfect_create(&s, p, n), "stb_perfect_hash 1");
+ stb_perfect_destroy(&s);
+ for (i=0; i < n; ++i)
+ p[i] = stb_rand();
+ c(stb_perfect_create(&s, p, n), "stb_perfect_hash 2");
+ stb_perfect_destroy(&s);
+ for (i=0; i < n; ++i)
+ p[i] = (0x80000000 >> stb_log2_ceil(n>>1)) * i;
+ c(stb_perfect_create(&s, p, n), "stb_perfect_hash 2");
+ stb_perfect_destroy(&s);
+ for (i=0; i < n; ++i)
+ p[i] = (int) malloc(1024);
+ c(stb_perfect_create(&s, p, n), "stb_perfect_hash 3");
+ stb_perfect_destroy(&s);
+ for (i=0; i < n; ++i)
+ free((void *) p[i]);
+ free(p);
+ }
+ printf("Maximum attempts required to find perfect hash: %d\n",
+ stb_perfect_hash_max_failures);
+
+ p = "abcdefghijklmnopqrstuvwxyz";
+ c(stb_ischar('c', p), "stb_ischar 1");
+ c(stb_ischar('x', p), "stb_ischar 2");
+ c(!stb_ischar('#', p), "stb_ischar 3");
+ c(!stb_ischar('X', p), "stb_ischar 4");
+ p = "0123456789";
+ c(!stb_ischar('c', p), "stb_ischar 5");
+ c(!stb_ischar('x', p), "stb_ischar 6");
+ c(!stb_ischar('#', p), "stb_ischar 7");
+ c(!stb_ischar('X', p), "stb_ischar 8");
+ p = "#####";
+ c(!stb_ischar('c', p), "stb_ischar a");
+ c(!stb_ischar('x', p), "stb_ischar b");
+ c(stb_ischar('#', p), "stb_ischar c");
+ c(!stb_ischar('X', p), "stb_ischar d");
+ p = "xXyY";
+ c(!stb_ischar('c', p), "stb_ischar e");
+ c(stb_ischar('x', p), "stb_ischar f");
+ c(!stb_ischar('#', p), "stb_ischar g");
+ c(stb_ischar('X', p), "stb_ischar h");
+
+ c(stb_alloc_count_alloc == stb_alloc_count_free, "stb_alloc 1");
+
+ q = stb_wordwrapalloc(15, "How now brown cow. Testinglishously. Okey dokey");
+ // How now brown
+ // cow. Testinglis
+ // hously. Okey
+ // dokey
+ c(stb_arr_len(q) == 8, "stb_wordwrap 8");
+ c(q[2] == 14 && q[3] == 15, "stb_wordwrap 9");
+ c(q[4] == 29 && q[5] == 12, "stb_wordwrap 10");
+ stb_arr_free(q);
+
+ q = stb_wordwrapalloc(20, "How now brown cow. Testinglishously. Okey dokey");
+ // How now brown cow.
+ // Testinglishously.
+ // Okey dokey
+ c(stb_arr_len(q) == 6, "stb_wordwrap 1");
+ c(q[0] == 0 && q[1] == 18, "stb_wordwrap 2");
+ c(q[2] == 19 && q[3] == 17, "stb_wordwrap 3");
+ c(q[4] == 37 && q[5] == 10, "stb_wordwrap 4");
+ stb_arr_free(q);
+
+ q = stb_wordwrapalloc(12, "How now brown cow. Testinglishously. Okey dokey");
+ // How now
+ // brown cow.
+ // Testinglisho
+ // usly. Okey
+ // dokey
+ c(stb_arr_len(q) == 10, "stb_wordwrap 5");
+ c(q[4] == 19 && q[5] == 12, "stb_wordwrap 6");
+ c(q[6] == 31 && q[3] == 10, "stb_wordwrap 7");
+ stb_arr_free(q);
+
+ //test_script();
+
+ //test_packed_floats();
+
+ c(stb_alloc_count_alloc == stb_alloc_count_free, "stb_alloc 0");
+ if (stb_alloc_count_alloc != stb_alloc_count_free) {
+ printf("%d allocs, %d frees\n", stb_alloc_count_alloc, stb_alloc_count_free);
+ }
+ test_lex();
+
+ mt = stb_regex_matcher(".*foo.*bar.*");
+ c(stb_matcher_match(mt, "foobarx") == 1, "stb_matcher_match 1");
+ c(stb_matcher_match(mt, "foobar") == 1, "stb_matcher_match 2");
+ c(stb_matcher_match(mt, "foo bar") == 1, "stb_matcher_match 3");
+ c(stb_matcher_match(mt, "fo foo ba ba bar ba") == 1, "stb_matcher_match 4");
+ c(stb_matcher_match(mt, "fo oo oo ba ba bar foo") == 0, "stb_matcher_match 5");
+ stb_free(mt);
+
+ mt = stb_regex_matcher(".*foo.?bar.*");
+ c(stb_matcher_match(mt, "abfoobarx") == 1, "stb_matcher_match 6");
+ c(stb_matcher_match(mt, "abfoobar") == 1, "stb_matcher_match 7");
+ c(stb_matcher_match(mt, "abfoo bar") == 1, "stb_matcher_match 8");
+ c(stb_matcher_match(mt, "abfoo bar") == 0, "stb_matcher_match 9");
+ c(stb_matcher_match(mt, "abfo foo ba ba bar ba") == 0, "stb_matcher_match 10");
+ c(stb_matcher_match(mt, "abfo oo oo ba ba bar foo") == 0, "stb_matcher_match 11");
+ stb_free(mt);
+
+ mt = stb_regex_matcher(".*m((foo|bar)*baz)m.*");
+ c(stb_matcher_match(mt, "abfoobarx") == 0, "stb_matcher_match 12");
+ c(stb_matcher_match(mt, "a mfoofoofoobazm d") == 1, "stb_matcher_match 13");
+ c(stb_matcher_match(mt, "a mfoobarbazfoom d") == 0, "stb_matcher_match 14");
+ c(stb_matcher_match(mt, "a mbarbarfoobarbazm d") == 1, "stb_matcher_match 15");
+ c(stb_matcher_match(mt, "a mfoobarfoo bazm d") == 0, "stb_matcher_match 16");
+ c(stb_matcher_match(mt, "a mm foobarfoobarfoobar ") == 0, "stb_matcher_match 17");
+ stb_free(mt);
+
+ mt = stb_regex_matcher("f*|z");
+ c(stb_matcher_match(mt, "fz") == 0, "stb_matcher_match 0a");
+ c(stb_matcher_match(mt, "ff") == 1, "stb_matcher_match 0b");
+ c(stb_matcher_match(mt, "z") == 1, "stb_matcher_match 0c");
+ stb_free(mt);
+
+ mt = stb_regex_matcher("m(f|z*)n");
+ c(stb_matcher_match(mt, "mfzn") == 0, "stb_matcher_match 0d");
+ c(stb_matcher_match(mt, "mffn") == 0, "stb_matcher_match 0e");
+ c(stb_matcher_match(mt, "mzn") == 1, "stb_matcher_match 0f");
+ c(stb_matcher_match(mt, "mn") == 1, "stb_matcher_match 0g");
+ c(stb_matcher_match(mt, "mzfn") == 0, "stb_matcher_match 0f");
+
+ c(stb_matcher_find(mt, "manmanmannnnnnnmmmmmmmmm ") == 0, "stb_matcher_find 1");
+ c(stb_matcher_find(mt, "manmanmannnnnnnmmmmmmmmm ") == 0, "stb_matcher_find 2");
+ c(stb_matcher_find(mt, "manmanmannnnnnnmmmmmmmmmffzzz ") == 0, "stb_matcher_find 3");
+ c(stb_matcher_find(mt, "manmanmannnnnnnmmmmmmmmmnfzzz ") == 1, "stb_matcher_find 4");
+ c(stb_matcher_find(mt, "mmmfn aanmannnnnnnmmmmmm fzzz ") == 1, "stb_matcher_find 5");
+ c(stb_matcher_find(mt, "mmmzzn anmannnnnnnmmmmmm fzzz ") == 1, "stb_matcher_find 6");
+ c(stb_matcher_find(mt, "mm anmannnnnnnmmmmmm fzmzznzz ") == 1, "stb_matcher_find 7");
+ c(stb_matcher_find(mt, "mm anmannnnnnnmmmmmm fzmzzfnzz ") == 0, "stb_matcher_find 8");
+ c(stb_matcher_find(mt, "manmfnmannnnnnnmmmmmmmmmffzzz ") == 1, "stb_matcher_find 9");
+ stb_free(mt);
+
+ mt = stb_regex_matcher(".*m((foo|bar)*|baz)m.*");
+ c(stb_matcher_match(mt, "abfoobarx") == 0, "stb_matcher_match 18");
+ c(stb_matcher_match(mt, "a mfoofoofoobazm d") == 0, "stb_matcher_match 19");
+ c(stb_matcher_match(mt, "a mfoobarbazfoom d") == 0, "stb_matcher_match 20");
+ c(stb_matcher_match(mt, "a mbazm d") == 1, "stb_matcher_match 21");
+ c(stb_matcher_match(mt, "a mfoobarfoom d") == 1, "stb_matcher_match 22");
+ c(stb_matcher_match(mt, "a mm foobarfoobarfoobar ") == 1, "stb_matcher_match 23");
+ stb_free(mt);
+
+ mt = stb_regex_matcher("[a-fA-F]..[^]a-zA-Z]");
+ c(stb_matcher_match(mt, "Axx1") == 1, "stb_matcher_match 24");
+ c(stb_matcher_match(mt, "Fxx1") == 1, "stb_matcher_match 25");
+ c(stb_matcher_match(mt, "Bxx]") == 0, "stb_matcher_match 26");
+ c(stb_matcher_match(mt, "Cxxz") == 0, "stb_matcher_match 27");
+ c(stb_matcher_match(mt, "gxx[") == 0, "stb_matcher_match 28");
+ c(stb_matcher_match(mt, "-xx0") == 0, "stb_matcher_match 29");
+ stb_free(mt);
+
+ c(stb_wildmatch("foo*bar", "foobarx") == 0, "stb_wildmatch 0a");
+ c(stb_wildmatch("foo*bar", "foobar") == 1, "stb_wildmatch 1a");
+ c(stb_wildmatch("foo*bar", "foo bar") == 1, "stb_wildmatch 2a");
+ c(stb_wildmatch("foo*bar", "fo foo ba ba bar ba") == 0, "stb_wildmatch 3a");
+ c(stb_wildmatch("foo*bar", "fo oo oo ba ba ar foo") == 0, "stb_wildmatch 4a");
+
+ c(stb_wildmatch("*foo*bar*", "foobar") == 1, "stb_wildmatch 1b");
+ c(stb_wildmatch("*foo*bar*", "foo bar") == 1, "stb_wildmatch 2b");
+ c(stb_wildmatch("*foo*bar*", "fo foo ba ba bar ba") == 1, "stb_wildmatch 3b");
+ c(stb_wildmatch("*foo*bar*", "fo oo oo ba ba ar foo") == 0, "stb_wildmatch 4b");
+
+ c(stb_wildmatch("foo*bar*", "foobarx") == 1, "stb_wildmatch 1c");
+ c(stb_wildmatch("foo*bar*", "foobabar") == 1, "stb_wildmatch 2c");
+ c(stb_wildmatch("foo*bar*", "fo foo ba ba bar ba") == 0, "stb_wildmatch 3c");
+ c(stb_wildmatch("foo*bar*", "fo oo oo ba ba ar foo") == 0, "stb_wildmatch 4c");
+
+ c(stb_wildmatch("*foo*bar", "foobar") == 1, "stb_wildmatch 1d");
+ c(stb_wildmatch("*foo*bar", "foo bar") == 1, "stb_wildmatch 2d");
+ c(stb_wildmatch("*foo*bar", "fo foo ba ba bar ba") == 0, "stb_wildmatch 3d");
+ c(stb_wildmatch("*foo*bar", "fo oo oo ba ba ar foo") == 0, "stb_wildmatch 4d");
+
+ c(stb_wildfind("foo*bar", "xyfoobarx") == 2, "stb_wildfind 0a");
+ c(stb_wildfind("foo*bar", "aaafoobar") == 3, "stb_wildfind 1a");
+ c(stb_wildfind("foo*bar", "foo bar") == 0, "stb_wildfind 2a");
+ c(stb_wildfind("foo*bar", "fo foo ba ba bar ba") == 3, "stb_wildfind 3a");
+ c(stb_wildfind("foo*bar", "fo oo oo ba ba ar foo") == -1, "stb_wildfind 4a");
+
+ c(stb_wildmatch("*foo*;*bar*", "foobar") == 1, "stb_wildmatch 1e");
+ c(stb_wildmatch("*foo*;*bar*", "afooa") == 1, "stb_wildmatch 2e");
+ c(stb_wildmatch("*foo*;*bar*", "abara") == 1, "stb_wildmatch 3e");
+ c(stb_wildmatch("*foo*;*bar*", "abaza") == 0, "stb_wildmatch 4e");
+ c(stb_wildmatch("*foo*;*bar*", "foboar") == 0, "stb_wildmatch 5e");
+
+ test_sha1();
+
+ n = sizeof(args_raw)/sizeof(args_raw[0]);
+ memcpy(args, args_raw, sizeof(args_raw));
+ s = stb_getopt(&n, args);
+ c(n >= 1 && !strcmp(args[1], "bar" ), "stb_getopt 1");
+ c(stb_arr_len(s) >= 2 && !strcmp(s[2] , "r" ), "stb_getopt 2");
+ stb_getopt_free(s);
+
+ n = sizeof(args_raw)/sizeof(args_raw[0]);
+ memcpy(args, args_raw, sizeof(args_raw));
+ s = stb_getopt_param(&n, args, "f");
+ c(stb_arr_len(s) >= 3 && !strcmp(s[3] , "fbar"), "stb_getopt 3");
+ stb_getopt_free(s);
+
+ n = sizeof(args_raw)/sizeof(args_raw[0]);
+ memcpy(args, args_raw, sizeof(args_raw));
+ s = stb_getopt_param(&n, args, "x");
+ c(stb_arr_len(s) >= 2 && !strcmp(s[1] , "xrf" ), "stb_getopt 4");
+ stb_getopt_free(s);
+
+ n = sizeof(args_raw)/sizeof(args_raw[0]);
+ memcpy(args, args_raw, sizeof(args_raw));
+ s = stb_getopt_param(&n, args, "s");
+ c(s == NULL && n == 0 , "stb_getopt 5");
+ stb_getopt_free(s);
+
+#if 0
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, -1, -1) == 1, "stb_csample_int 1");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, 1, -3) == 2, "stb_csample_int 2");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, 12, -2) == 5, "stb_csample_int 3");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, 15, 1) == 10, "stb_csample_int 4");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, 5, 4) == 15, "stb_csample_int 5");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, 3, 3) == 14, "stb_csample_int 6");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, -2, 5) == 11, "stb_csample_int 7");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, -7, 0) == 1, "stb_csample_int 8");
+ c(*stb_csample_int(sample_test[0], 1, 5, 5, 3, 2, 1) == 8, "stb_csample_int 9");
+#endif
+
+ c(!strcmp(stb_splitpath(buf, p1, STB_PATH ), "foo/bar\\baz/"), "stb_splitpath 1");
+ c(!strcmp(stb_splitpath(buf, p1, STB_FILE ), "test"), "stb_splitpath 2");
+ c(!strcmp(stb_splitpath(buf, p1, STB_EXT ), ".xyz"), "stb_splitpath 3");
+ c(!strcmp(stb_splitpath(buf, p1, STB_PATH_FILE ), "foo/bar\\baz/test"), "stb_splitpath 4");
+ c(!strcmp(stb_splitpath(buf, p1, STB_FILE_EXT ), "test.xyz"), "stb_splitpath 5");
+
+ c(!strcmp(stb_splitpath(buf, p2, STB_PATH ), "foo/"), "stb_splitpath 6");
+ c(!strcmp(stb_splitpath(buf, p2, STB_FILE ), ""), "stb_splitpath 7");
+ c(!strcmp(stb_splitpath(buf, p2, STB_EXT ), ".bar"), "stb_splitpath 8");
+ c(!strcmp(stb_splitpath(buf, p2, STB_PATH_FILE ), "foo/"), "stb_splitpath 9");
+ c(!strcmp(stb_splitpath(buf, p2, STB_FILE_EXT ), ".bar"), "stb_splitpath 10");
+
+ c(!strcmp(stb_splitpath(buf, p3, STB_PATH ), "./"), "stb_splitpath 11");
+ c(!strcmp(stb_splitpath(buf, p3, STB_FILE ), "foo"), "stb_splitpath 12");
+ c(!strcmp(stb_splitpath(buf, p3, STB_EXT ), ".bar"), "stb_splitpath 13");
+ c(!strcmp(stb_splitpath(buf, p3, STB_PATH_FILE ), "foo"), "stb_splitpath 14");
+
+ c(!strcmp(stb_splitpath(buf, p4, STB_PATH ), "foo/"), "stb_splitpath 16");
+ c(!strcmp(stb_splitpath(buf, p4, STB_FILE ), "bar"), "stb_splitpath 17");
+ c(!strcmp(stb_splitpath(buf, p4, STB_EXT ), ""), "stb_splitpath 18");
+ c(!strcmp(stb_splitpath(buf, p4, STB_PATH_FILE ), "foo/bar"), "stb_splitpath 19");
+ c(!strcmp(stb_splitpath(buf, p4, STB_FILE_EXT ), "bar"), "stb_splitpath 20");
+
+ c(!strcmp(p=stb_dupreplace("testfootffooo foo fox", "foo", "brap"), "testbraptfbrapo brap fox"), "stb_dupreplace 1"); free(p);
+ c(!strcmp(p=stb_dupreplace("testfootffooo foo fox", "foo", "" ), "testtfo fox" ), "stb_dupreplace 2"); free(p);
+ c(!strcmp(p=stb_dupreplace("abacab", "a", "aba"), "abababacabab" ), "stb_dupreplace 3"); free(p);
+
+
+#if 0
+ m = stb_mml_parse("<a><b><c>x</c><d>y</d></b><e>&lt;&amp;f&gt;</e></a>");
+ c(m != NULL, "stb_mml_parse 1");
+ if (m) {
+ c(!strcmp(m->child[0]->child[0]->child[1]->tag, "d"), "stb_mml_parse 2");
+ c(!strcmp(m->child[0]->child[1]->leaf_data, "<&f>"), "stb_mml_parse 3");
+ }
+ if (m)
+ stb_mml_free(m);
+ c(stb_alloc_count_alloc == stb_alloc_count_free, "stb_alloc 1");
+ if (stb_alloc_count_alloc != stb_alloc_count_free) {
+ printf("%d allocs, %d frees\n", stb_alloc_count_alloc, stb_alloc_count_free);
+ }
+#endif
+
+ c(stb_linear_remap(3.0f,0,8,1,2) == 1.375, "stb_linear_remap()");
+
+ c(stb_bitreverse(0x1248fec8) == 0x137f1248, "stb_bitreverse() 1");
+ c(stb_bitreverse8(0x4e) == 0x72, "stb_bitreverse8() 1");
+ c(stb_bitreverse8(0x31) == 0x8c, "stb_bitreverse8() 2");
+ for (n=1; n < 255; ++n) {
+ unsigned int m = stb_bitreverse8((uint8) n);
+ c(stb_bitreverse8((uint8) m) == (unsigned int) n, "stb_bitreverse8() 3");
+ }
+
+ for (n=2; n <= 31; ++n) {
+ c(stb_is_pow2 ((1 << n) ) == 1 , "stb_is_pow2() 1");
+ c(stb_is_pow2 ((1 << n)+1) == 0 , "stb_is_pow2() 2");
+ c(stb_is_pow2 ((1 << n)-1) == 0 , "stb_is_pow2() 3");
+
+ c(stb_log2_floor((1 << n) ) == n , "stb_log2_floor() 1");
+ c(stb_log2_floor((1 << n)+1) == n , "stb_log2_floor() 2");
+ c(stb_log2_floor((1 << n)-1) == n-1, "stb_log2_floor() 3");
+
+ c(stb_log2_ceil ((1 << n) ) == n , "stb_log2_ceil() 1");
+ c(stb_log2_ceil ((1 << n)+1) == n+1, "stb_log2_ceil() 2");
+ c(stb_log2_ceil ((1 << n)-1) == n , "stb_log2_ceil() 3");
+
+ c(stb_bitreverse(1 << n) == 1U << (31-n), "stb_bitreverse() 2");
+ }
+
+ c(stb_log2_floor(0) == -1, "stb_log2_floor() 4");
+ c(stb_log2_ceil (0) == -1, "stb_log2_ceil () 4");
+
+ c(stb_log2_floor(-1) == 31, "stb_log2_floor() 5");
+ c(stb_log2_ceil (-1) == 32, "stb_log2_ceil () 5");
+
+ c(stb_bitcount(0xffffffff) == 32, "stb_bitcount() 1");
+ c(stb_bitcount(0xaaaaaaaa) == 16, "stb_bitcount() 2");
+ c(stb_bitcount(0x55555555) == 16, "stb_bitcount() 3");
+ c(stb_bitcount(0x00000000) == 0, "stb_bitcount() 4");
+
+ c(stb_lowbit8(0xf0) == 4, "stb_lowbit8 1");
+ c(stb_lowbit8(0x10) == 4, "stb_lowbit8 2");
+ c(stb_lowbit8(0xf3) == 0, "stb_lowbit8 3");
+ c(stb_lowbit8(0xf8) == 3, "stb_lowbit8 4");
+ c(stb_lowbit8(0x60) == 5, "stb_lowbit8 5");
+
+ for (n=0; n < sizeof(buf); ++n)
+ buf[n] = 0;
+
+ for (n = 0; n < 200000; ++n) {
+ unsigned int k = stb_rand();
+ int i,z=0;
+ for (i=0; i < 32; ++i)
+ if (k & (1 << i)) ++z;
+ c(stb_bitcount(k) == z, "stb_bitcount() 5");
+
+ buf[k >> 24] = 1;
+
+ if (k != 0) {
+ if (stb_is_pow2(k)) {
+ c(stb_log2_floor(k) == stb_log2_ceil(k), "stb_is_pow2() 1");
+ c(k == 1U << stb_log2_floor(k), "stb_is_pow2() 2");
+ } else {
+ c(stb_log2_floor(k) == stb_log2_ceil(k)-1, "stb_is_pow2() 3");
+ }
+ }
+
+ c(stb_bitreverse(stb_bitreverse(n)) == (uint32) n, "stb_bitreverse() 3");
+ }
+
+ // make sure reasonable coverage from stb_rand()
+ for (n=0; n < sizeof(buf); ++n)
+ c(buf[n] != 0, "stb_rand()");
+
+ for (n=0; n < sizeof(buf); ++n)
+ buf[n] = 0;
+
+ for (n=0; n < 60000; ++n) {
+ float z = (float) stb_frand();
+ int n = (int) (z * sizeof(buf));
+ c(z >= 0 && z < 1, "stb_frand() 1");
+ c(n >= 0 && n < sizeof(buf), "stb_frand() 2");
+ buf[n] = 1;
+ }
+
+ // make sure reasonable coverage from stb_frand(),
+ // e.g. that the range remap isn't incorrect
+ for (n=0; n < sizeof(buf); ++n)
+ c(buf[n] != 0, "stb_frand()");
+
+
+ // stb_arr
+ {
+ short *s = NULL;
+
+ c(sum(s) == 0, "stb_arr 1");
+
+ stb_arr_add(s); s[0] = 3;
+ stb_arr_push(s,7);
+
+ c( stb_arr_valid(s,1), "stb_arr 2");
+ c(!stb_arr_valid(s,2), "stb_arr 3");
+
+ // force a realloc
+ stb_arr_push(s,0);
+ stb_arr_push(s,0);
+ stb_arr_push(s,0);
+ stb_arr_push(s,0);
+
+ c(sum(s) == 10, "stb_arr 4");
+ stb_arr_push(s,0);
+ s[0] = 1; s[1] = 5; s[2] = 20;
+ c(sum(s) == 26, "stb_arr 5");
+ stb_arr_setlen(s,2);
+ c(sum(s) == 6, "stb_arr 6");
+ stb_arr_setlen(s,1);
+ c(sum(s) == 1, "stb_arr 7");
+ stb_arr_setlen(s,0);
+ c(sum(s) == 0, "stb_arr 8");
+
+ stb_arr_push(s,3);
+ stb_arr_push(s,4);
+ stb_arr_push(s,5);
+ stb_arr_push(s,6);
+ stb_arr_push(s,7);
+ stb_arr_deleten(s,1,3);
+ c(stb_arr_len(s)==2 && sum(s) == 10, "stb_arr_9");
+
+ stb_arr_push(s,2);
+ // 3 7 2
+ stb_arr_insertn(s,2,2);
+ // 3 7 x x 2
+ s[2] = 5;
+ s[3] = 6;
+ c(s[0]==3 && s[1] == 7 && s[2] == 5 && s[3] == 6 && s[4] == 2, "stb_arr 10");
+ stb_arr_free(s);
+ }
+
+ #if 1
+ f= stb_fopen("data/stb.test", "wb");
+ fwrite(buffer, 1, sizeof(buffer)-1, f);
+ stb_fclose(f, stb_keep_yes);
+ #ifndef WIN32
+ sleep(1); // andLinux has some synchronization problem here
+ #endif
+ #else
+ f= fopen("data/stb.test", "wb");
+ fwrite(buffer, 1, sizeof(buffer)-1, f);
+ fclose(f);
+ #endif
+ if (!stb_fexists("data/stb.test")) {
+ fprintf(stderr, "Error: couldn't open file just written, or stb_fexists() is broken.\n");
+ }
+
+ f = fopen("data/stb.test", "rb");
+ // f = NULL; // test stb_fatal()
+ if (!f) { stb_fatal("Error: couldn't open file just written\n"); }
+ else {
+ char temp[4];
+ int len1 = stb_filelen(f), len2;
+ int n1,n2;
+ if (fread(temp,1,4,f) == 0) {
+ int n = ferror(f);
+ if (n) { stb_fatal("Error reading from stream: %d", n); }
+ if (feof(f)) stb_fatal("Weird, read 0 bytes and hit eof");
+ stb_fatal("Read 0, but neither feof nor ferror is true");
+ }
+ fclose(f);
+ p = stb_file("data/stb.test", &len2);
+ if (p == NULL) stb_fatal("Error: stb_file() failed");
+ c(len1 == sizeof(buffer)-1, "stb_filelen()");
+ c(len2 == sizeof(buffer)-1, "stb_file():n");
+ c(memcmp(p, buffer, sizeof(buffer)-1) == 0, "stb_file()");
+ c(strcmp(p, buffer)==0, "stb_file() terminated");
+ free(p);
+
+ s = stb_stringfile("data/stb.test", &n1);
+ c(n1 == 3, "stb_stringfile():n");
+ n2 = 0;
+ while (s[n2]) ++n2;
+ c(n1 == n2, "stb_stringfile():n length matches the non-NULL strings");
+ if (n2 == 3) {
+ c(strcmp(s[0],str1)==0, "stb_stringfile()[0]");
+ c(strcmp(s[1],str2)==0, "stb_stringfile()[1]");
+ c(strcmp(s[2],str3)==0, "stb_stringfile()[2] (no terminating newlines)");
+ }
+ free(s);
+
+ f = fopen("data/stb.test", "rb");
+ stb_fgets(buf, sizeof(buf), f);
+ //c(strcmp(buf, str1)==0, "stb_fgets()");
+ p = stb_fgets_malloc(f);
+ n1 = strlen(p);
+ n2 = strlen(str2);
+ c(strcmp(p, str2)==0, "stb_fgets_malloc()");
+ free(p);
+ stb_fgets(buf, sizeof(buf), f);
+ c(strcmp(buf, str3)==0, "stb_fgets()3");
+ }
+
+ c( stb_prefix("foobar", "foo"), "stb_prefix() 1");
+ c(!stb_prefix("foo", "foobar"), "stb_prefix() 2");
+ c( stb_prefix("foob", "foob" ), "stb_prefix() 3");
+
+ stb_strncpy(buf, "foobar", 6); c(strcmp(buf,"fooba" )==0, "stb_strncpy() 1");
+ stb_strncpy(buf, "foobar", 8); c(strcmp(buf,"foobar")==0, "stb_strncpy() 2");
+
+ c(!strcmp(p=stb_duplower("FooBar"), "foobar"), "stb_duplower()"); free(p);
+ strcpy(buf, "FooBar");
+ stb_tolower(buf);
+ c(!strcmp(buf, "foobar"), "stb_tolower()");
+
+ p = stb_strtok(buf, "foo=ba*r", "#=*");
+ c(!strcmp(buf, "foo" ), "stb_strtok() 1");
+ c(!strcmp(p , "ba*r"), "stb_strtok() 2");
+ p = stb_strtok(buf, "foobar", "#=*");
+ c(*p == 0, "stb_strtok() 3");
+
+ c(!strcmp(stb_skipwhite(" \t\n foo"), "foo"), "stb_skipwhite()");
+
+ s = stb_tokens("foo == ba*r", "#=*", NULL);
+ c(!strcmp(s[0], "foo "), "stb_tokens() 1");
+ c(!strcmp(s[1], " ba"), "stb_tokens() 2");
+ c(!strcmp(s[2], "r"), "stb_tokens() 3");
+ c(s[3] == 0, "stb_tokens() 4");
+ free(s);
+
+ s = stb_tokens_allowempty("foo == ba*r", "#=*", NULL);
+ c(!strcmp(s[0], "foo "), "stb_tokens_allowempty() 1");
+ c(!strcmp(s[1], "" ), "stb_tokens_allowempty() 2");
+ c(!strcmp(s[2], " ba"), "stb_tokens_allowempty() 3");
+ c(!strcmp(s[3], "r"), "stb_tokens_allowempty() 4");
+ c(s[4] == 0, "stb_tokens_allowempty() 5");
+ free(s);
+
+ s = stb_tokens_stripwhite("foo == ba*r", "#=*", NULL);
+ c(!strcmp(s[0], "foo"), "stb_tokens_stripwhite() 1");
+ c(!strcmp(s[1], "" ), "stb_tokens_stripwhite() 2");
+ c(!strcmp(s[2], "ba"), "stb_tokens_stripwhite() 3");
+ c(!strcmp(s[3], "r"), "stb_tokens_stripwhite() 4");
+ c(s[4] == 0, "stb_tokens_stripwhite() 5");
+ free(s);
+
+ s = stb_tokens_quoted("foo =\"=\" ba*\"\"r \" foo\" bah ", "#=*", NULL);
+ c(!strcmp(s[0], "foo"), "stb_tokens_quoted() 1");
+ c(!strcmp(s[1], "= ba"), "stb_tokens_quoted() 2");
+ c(!strcmp(s[2], "\"r foo bah"), "stb_tokens_quoted() 3");
+ c(s[3] == 0, "stb_tokens_quoted() 4");
+ free(s);
+
+
+ p = stb_file("stb.h", &len2);
+ if (p) {
+ uint32 z = stb_adler32_old(1, p, len2);
+ uint32 x = stb_adler32 (1, p, len2);
+ c(z == x, "stb_adler32() 1");
+ memset(p,0xff,len2);
+ z = stb_adler32_old((65520<<16) + 65520, p, len2);
+ x = stb_adler32 ((65520<<16) + 65520, p, len2);
+ c(z == x, "stb_adler32() 2");
+ free(p);
+ }
+
+ // stb_hheap
+ {
+ #define HHEAP_COUNT 100000
+ void **p = malloc(sizeof(*p) * HHEAP_COUNT);
+ int i, j;
+ #if 0
+ stb_hheap *h2, *h = stb_newhheap(sizeof(struct1),0);
+
+ for (i=0; i < HHEAP_COUNT; ++i)
+ p[i] = stb_halloc(h);
+ stb_shuffle(p, HHEAP_COUNT, sizeof(*p), stb_rand());
+ for (i=0; i < HHEAP_COUNT; ++i)
+ stb_hfree(p[i]);
+
+ c(h->num_alloc == 0, "stb_hheap 1");
+ stb_delhheap(h);
+
+ h = stb_newhheap(sizeof(struct1),0);
+ h2 = stb_newhheap(sizeof(struct2),8);
+
+ for (i=0; i < HHEAP_COUNT; ++i) {
+ if (i & 1)
+ p[i] = stb_halloc(h);
+ else {
+ p[i] = stb_halloc(h2);
+ c((((int) p[i]) & 4) == 0, "stb_hheap 2");
+ }
+ }
+
+ stb_shuffle(p, HHEAP_COUNT, sizeof(*p), stb_rand());
+ for (i=0; i < HHEAP_COUNT; ++i)
+ stb_hfree(p[i]);
+
+ c(h->num_alloc == 0, "stb_hheap 3");
+ c(h2->num_alloc == 0, "stb_hheap 4");
+
+ stb_delhheap(h);
+ stb_delhheap(h2);
+ #else
+ for (i=0; i < HHEAP_COUNT; ++i)
+ p[i] = malloc(32);
+ stb_shuffle(p, HHEAP_COUNT, sizeof(*p), stb_rand());
+ for (i=0; i < HHEAP_COUNT; ++i)
+ free(p[i]);
+ #endif
+
+ // now use the same array of pointers to do pointer set operations
+ for (j=100; j < HHEAP_COUNT; j += 25000) {
+ stb_ps *ps = NULL;
+ for (i=0; i < j; ++i)
+ ps = stb_ps_add(ps, p[i]);
+
+ for (i=0; i < HHEAP_COUNT; ++i)
+ c(stb_ps_find(ps, p[i]) == (i < j), "stb_ps 1");
+ c(stb_ps_count(ps) == j, "stb_ps 1b");
+
+ for (i=j; i < HHEAP_COUNT; ++i)
+ ps = stb_ps_add(ps, p[i]);
+
+ for (i=0; i < j; ++i)
+ ps = stb_ps_remove(ps, p[i]);
+
+ for (i=0; i < HHEAP_COUNT; ++i)
+ c(stb_ps_find(ps, p[i]) == !(i < j), "stb_ps 2");
+
+ stb_ps_delete(ps);
+ }
+
+ #define HHEAP_COUNT2 100
+ // now use the same array of pointers to do pointer set operations
+ for (j=1; j < 40; ++j) {
+ stb_ps *ps = NULL;
+ for (i=0; i < j; ++i)
+ ps = stb_ps_add(ps, p[i]);
+
+ for (i=0; i < HHEAP_COUNT2; ++i)
+ c(stb_ps_find(ps, p[i]) == (i < j), "stb_ps 3");
+ c(stb_ps_count(ps) == j, "stb_ps 3b");
+
+ for (i=j; i < HHEAP_COUNT2; ++i)
+ ps = stb_ps_add(ps, p[i]);
+
+ for (i=0; i < j; ++i)
+ ps = stb_ps_remove(ps, p[i]);
+
+ for (i=0; i < HHEAP_COUNT2; ++i)
+ c(stb_ps_find(ps, p[i]) == !(i < j), "stb_ps 4");
+
+ stb_ps_delete(ps);
+ }
+
+ free(p);
+ }
+
+
+ n = test_compression(tc, sizeof(tc));
+ c(n >= 0, "stb_compress()/stb_decompress() 1");
+
+ p = stb_file("stb.h", &len2);
+ if (p) {
+ FILE *f = fopen("data/stb_h.z", "wb");
+ if (stb_compress_stream_start(f)) {
+ int i;
+ void *q;
+ int len3;
+
+ for (i=0; i < len2; ) {
+ int n = stb_rand() % 10;
+ if (n <= 6) n = 1 + stb_rand()%16;
+ else if (n <= 8) n = 20 + stb_rand() % 1000;
+ else n = 15000;
+ if (i + n > len2) n = len2 - i;
+ stb_write(p + i, n);
+ i += n;
+ }
+ stb_compress_stream_end(1);
+
+ q = stb_decompress_fromfile("data/stb_h.z", &len3);
+ c(len3 == len2, "stb_compress_stream 2");
+ if (len2 == len3)
+ c(!memcmp(p,q,len2), "stb_compress_stream 3");
+ if (q) free(q);
+ } else {
+ c(0, "stb_compress_stream 1");
+ }
+
+ free(p);
+ stb_compress_window(65536*4);
+ }
+
+ p = stb_file("stb.h", &len2);
+ if (p) {
+ n = test_compression(p, len2);
+ c(n >= 0, "stb_compress()/stb_decompress() 2");
+ #if 0
+ n = test_en_compression(p, len2);
+ c(n >= 0, "stb_en_compress()/stb_en_decompress() 2");
+ #endif
+ free(p);
+ } else {
+ fprintf(stderr, "No stb.h to compression test.\n");
+ }
+
+ p = stb_file("data/test.bmp", &len2);
+ if (p) {
+ n = test_compression(p, len2);
+ c(n == 106141, "stb_compress()/stb_decompress() 4");
+ #if 0
+ n = test_en_compression(p, len2);
+ c(n >= 0, "stb_en_compress()/stb_en_decompress() 4");
+ #endif
+ free(p);
+ }
+
+ // the hardcoded compressed lengths being verified _could_
+ // change if you changed the compresser parameters; but pure
+ // performance optimizations shouldn't change them
+ p = stb_file("data/cantrbry.zip", &len2);
+ if (p) {
+ n = test_compression(p, len2);
+ c(n == 642787, "stb_compress()/stb_decompress() 3");
+ #if 0
+ n = test_en_compression(p, len2);
+ c(n >= 0, "stb_en_compress()/stb_en_decompress() 3");
+ #endif
+ free(p);
+ }
+
+ p = stb_file("data/bible.txt", &len2);
+ if (p) {
+ n = test_compression(p, len2);
+ c(n == 2022520, "stb_compress()/stb_decompress() 4");
+ #if 0
+ n = test_en_compression(p, len2);
+ c(n >= 0, "stb_en_compress()/stb_en_decompress() 4");
+ #endif
+ free(p);
+ }
+
+ {
+ int len = 1 << 25, o=0; // 32MB
+ char *buffer = malloc(len);
+ int i;
+ for (i=0; i < 8192; ++i)
+ buffer[o++] = (char) stb_rand();
+ for (i=0; i < (1 << 15); ++i)
+ buffer[o++] = 1;
+ for (i=0; i < 64; ++i)
+ buffer[o++] = buffer[i];
+ for (i=0; i < (1 << 21); ++i)
+ buffer[o++] = 2;
+ for (i=0; i < 64; ++i)
+ buffer[o++] = buffer[i];
+ for (i=0; i < (1 << 21); ++i)
+ buffer[o++] = 3;
+ for (i=0; i < 8192; ++i)
+ buffer[o++] = buffer[i];
+ for (i=0; i < (1 << 21); ++i)
+ buffer[o++] = 4;
+ assert(o < len);
+ stb_compress_window(1 << 24);
+ i = test_compression(buffer, len);
+ c(n >= 0, "stb_compress() 6");
+ free(buffer);
+ }
+
+ #ifdef STB_THREADS
+ stb_thread_cleanup();
+ #endif
+ stb_ischar(0,NULL);
+ stb_wrapper_listall(dumpfunc);
+ printf("Memory still in use: %d allocations of %d bytes.\n", alloc_num, alloc_size);
+
+ // force some memory checking
+ for (n=1; n < 20; ++n)
+ malloc(1 << n);
+
+ printf("Finished stb.c with %d errors.\n", count);
+
+ #ifdef _MSC_VER
+ if (count)
+ __asm int 3;
+ #endif
+
+ return 0;
+}
+
+#endif
+
+
+
+
+
+// NIST test vectors
+
+struct
+{
+ int length;
+ char *message;
+ char *digest;
+} sha1_tests[] =
+{
+ 24,
+"616263",
+"a9993e364706816aba3e25717850c26c9cd0d89d",
+
+ 1304,
+"ec29561244ede706b6eb30a1c371d74450a105c3f9735f7fa9fe38cf67f304a5736a106e"
+"92e17139a6813b1c81a4f3d3fb9546ab4296fa9f722826c066869edacd73b25480351858"
+"13e22634a9da44000d95a281ff9f264ecce0a931222162d021cca28db5f3c2aa24945ab1"
+"e31cb413ae29810fd794cad5dfaf29ec43cb38d198fe4ae1da2359780221405bd6712a53"
+"05da4b1b737fce7cd21c0eb7728d08235a9011",
+"970111c4e77bcc88cc20459c02b69b4aa8f58217",
+
+ 2096,
+"5fc2c3f6a7e79dc94be526e5166a238899d54927ce470018fbfd668fd9dd97cbf64e2c91"
+"584d01da63be3cc9fdff8adfefc3ac728e1e335b9cdc87f069172e323d094b47fa1e652a"
+"fe4d6aa147a9f46fda33cacb65f3aa12234746b9007a8c85fe982afed7815221e43dba55"
+"3d8fe8a022cdac1b99eeeea359e5a9d2e72e382dffa6d19f359f4f27dc3434cd27daeeda"
+"8e38594873398678065fbb23665aba9309d946135da0e4a4afdadff14db18e85e71dd93c"
+"3bf9faf7f25c8194c4269b1ee3d9934097ab990025d9c3aaf63d5109f52335dd3959d38a"
+"e485050e4bbb6235574fc0102be8f7a306d6e8de6ba6becf80f37415b57f9898a5824e77"
+"414197422be3d36a6080",
+ "0423dc76a8791107d14e13f5265b343f24cc0f19",
+
+ 2888,
+"0f865f46a8f3aed2da18482aa09a8f390dc9da07d51d1bd10fe0bf5f3928d5927d08733d"
+"32075535a6d1c8ac1b2dc6ba0f2f633dc1af68e3f0fa3d85e6c60cb7b56c239dc1519a00"
+"7ea536a07b518ecca02a6c31b46b76f021620ef3fc6976804018380e5ab9c558ebfc5cb1"
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+"8f2053f29b81e277be46",
+ "a757ead499a6ec3d8ab9814f839117354ae563c8"
+};
+
+void test_sha1(void)
+{
+ unsigned char buffer[4000];
+ int i;
+ for (i=0; i < sizeof(sha1_tests) / sizeof(sha1_tests[0]); ++i) {
+ stb_uint len = sha1_tests[i].length / 8;
+ unsigned char digest[20], fdig[20];
+ unsigned int h;
+ assert(len <= sizeof(buffer));
+ assert(strlen(sha1_tests[i].message) == len*2);
+ assert(strlen(sha1_tests[i].digest) == 20 * 2);
+ for (h=0; h < len; ++h) {
+ char v[3];
+ v[0] = sha1_tests[i].message[h*2];
+ v[1] = sha1_tests[i].message[h*2+1];
+ v[2] = 0;
+ buffer[h] = (unsigned char) strtol(v, NULL, 16);
+ }
+ stb_sha1(digest, buffer, len);
+ for (h=0; h < 20; ++h) {
+ char v[3];
+ int res;
+ v[0] = sha1_tests[i].digest[h*2];
+ v[1] = sha1_tests[i].digest[h*2+1];
+ v[2] = 0;
+ res = digest[h] == strtol(v, NULL, 16);
+ c(res, sha1_tests[i].digest);
+ if (!res)
+ break;
+ }
+ {
+ int z;
+ FILE *f = fopen("data/test.bin", "wb");
+ if (!f) stb_fatal("Couldn't write to test.bin");
+ fwrite(buffer, len, 1, f);
+ fclose(f);
+ #ifdef _WIN32
+ z = stb_sha1_file(fdig, "data/test.bin");
+ if (!z) stb_fatal("Couldn't digest test.bin");
+ c(memcmp(digest, fdig, 20)==0, "stb_sh1_file");
+ #endif
+ }
+ }
+}
+
+
+#if 0
+
+stb__obj zero, one;
+
+void test_packed_floats(void)
+{
+ stb__obj *p;
+ float x,y,*q;
+ clock_t a,b,c;
+ int i;
+ stb_float_init();
+ for (i=-10; i < 10; ++i) {
+ float f = (float) pow(10,i);
+ float g = f * 10;
+ float delta = (g - f) / 10000;
+ while (f < g) {
+ stb__obj z = stb_float(f);
+ float k = stb_getfloat(z);
+ float p = stb_getfloat_table(z);
+ assert((z & 1) == 1);
+ assert(f == k);
+ assert(k == p);
+ f += delta;
+ }
+ }
+
+ zero = stb_float(0);
+ one = stb_float(1);
+
+ p = malloc(8192 * 4);
+ for (i=0; i < 8192; ++i)
+ p[i] = stb_rand();
+ for (i=0; i < 8192; ++i)
+ if ((stb_rand() & 31) < 28)
+ p[i] = zero;
+
+ q = malloc(4 * 1024);
+
+ a = clock();
+
+ x = y = 0;
+ for (i=0; i < 200000000; ++i)
+ q[i&1023] = stb_getfloat_table(p[i&8191]);
+ b = clock();
+ for (i=0; i < 200000000; ++i)
+ q[i&1023] = stb_getfloat_table2(p[i&8191]);
+ c = clock();
+ free(p);
+
+ free(q);
+
+ printf("Table: %d\nIFs: %d\n", b-a, c-b);
+}
+#endif
+
+
+void do_compressor(int argc,char**argv)
+{
+ char *p;
+ int len;
+
+ int window;
+ if (argc == 2) {
+ p = stb_file(argv[1], &len);
+ if (p) {
+ int dlen, clen = stb_compress_tofile("data/dummy.bin", p, len);
+ char *q = stb_decompress_fromfile("data/dummy.bin", &dlen);
+
+ if (len != dlen) {
+ printf("FAILED %d -> %d\n", len, clen);
+ } else {
+ int z = memcmp(q,p,dlen);
+ if (z != 0)
+ printf("FAILED %d -> %d\n", len, clen);
+ else
+ printf("%d -> %d\n", len, clen);
+ }
+ }
+ return;
+ }
+
+ window = atoi(argv[1]);
+ if (window && argc == 4) {
+ p = stb_file(argv[3], &len);
+ if (p) {
+ stb_compress_hashsize(window);
+ stb_compress_tofile(argv[2], p, len);
+ }
+ } else if (argc == 3) {
+ p = stb_decompress_fromfile(argv[2], &len);
+ if (p) {
+ FILE *f = fopen(argv[1], "wb");
+ fwrite(p,1,len,f);
+ fclose(f);
+ } else {
+ fprintf(stderr, "FAILED.\n");
+ }
+ } else {
+ fprintf(stderr, "Usage: stb <hashsize> <output> <filetocompress>\n"
+ " or stb <output> <filetodecompress>\n");
+ }
+}
+
+#if 0
+// naive backtracking implementation
+int wildmatch(char *expr, char *candidate)
+{
+ while(*expr) {
+ if (*expr == '?') {
+ if (!*candidate) return 0;
+ ++candidate;
+ ++expr;
+ } else if (*expr == '*') {
+ ++expr;
+ while (*expr == '*' || *expr =='?') ++expr;
+ // '*' at end of expression matches anything
+ if (!*expr) return 1;
+ // now scan candidate 'til first match
+ while (*candidate) {
+ if (*candidate == *expr) {
+ // check this candidate
+ if (stb_wildmatch(expr+1, candidate+1))
+ return 1;
+ // if not, then backtrack
+ }
+ ++candidate;
+ }
+ } else {
+ if (*expr != *candidate)
+ return 0;
+ ++expr, ++candidate;
+ }
+ }
+ return *candidate != 0;
+}
+
+int stb_matcher_find_slow(stb_matcher *m, char *str)
+{
+ int result = 1;
+ int i,j,y,z;
+ uint16 *previous = NULL;
+ uint16 *current = NULL;
+ uint16 *temp;
+
+ stb_arr_setsize(previous, 4);
+ stb_arr_setsize(current, 4);
+
+ previous = stb__add_if_inactive(m, previous, m->start_node);
+ previous = stb__eps_closure(m,previous);
+ if (stb__clear_goalcheck(m, previous))
+ goto done;
+
+ while (*str) {
+ y = stb_arr_len(previous);
+ for (i=0; i < y; ++i) {
+ stb_nfa_node *n = &m->nodes[previous[i]];
+ z = stb_arr_len(n->out);
+ for (j=0; j < z; ++j) {
+ if (n->out[j].match == *str)
+ current = stb__add_if_inactive(m, current, n->out[j].node);
+ else if (n->out[j].match == -1) {
+ if (*str != '\n')
+ current = stb__add_if_inactive(m, current, n->out[j].node);
+ } else if (n->out[j].match < -1) {
+ int z = -n->out[j].match - 2;
+ if (m->charset[(uint8) *str] & (1 << z))
+ current = stb__add_if_inactive(m, current, n->out[j].node);
+ }
+ }
+ }
+ ++str;
+ stb_arr_setlen(previous, 0);
+
+ temp = previous;
+ previous = current;
+ current = temp;
+
+ if (!m->match_start)
+ previous = stb__add_if_inactive(m, previous, m->start_node);
+ previous = stb__eps_closure(m,previous);
+ if (stb__clear_goalcheck(m, previous))
+ goto done;
+ }
+
+ result=0;
+
+done:
+ stb_arr_free(previous);
+ stb_arr_free(current);
+
+ return result;
+}
+#endif
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////
+//
+// stb_parser
+//
+// Generates an LR(1) parser from a grammar, and can parse with it
+
+
+
+// Symbol representations
+//
+// Client: Internal:
+// - c=0 e aka epsilon
+// - c=1 $ aka end of string
+// > 0 2<=c<M terminals (note these are remapped from a sparse layout)
+// < 0 M<=c<N non-terminals
+
+#define END 1
+#define EPS 0
+
+short encode_term[4096]; // @TODO: malloc these
+short encode_nonterm[4096];
+int first_nonterm, num_symbols, symset;
+#define encode_term(x) encode_term[x]
+#define encode_nonterm(x) encode_nonterm[~(x)]
+#define encode_symbol(x) ((x) >= 0 ? encode_term(x) : encode_nonterm(x))
+
+stb_bitset **compute_first(short ** productions)
+{
+ int i, changed;
+ stb_bitset **first = malloc(sizeof(*first) * num_symbols);
+
+ assert(symset);
+ for (i=0; i < num_symbols; ++i)
+ first[i] = stb_bitset_new(0, symset);
+
+ for (i=END; i < first_nonterm; ++i)
+ stb_bitset_setbit(first[i], i);
+
+ for (i=0; i < stb_arr_len(productions); ++i) {
+ if (productions[i][2] == 0) {
+ int nt = encode_nonterm(productions[i][0]);
+ stb_bitset_setbit(first[nt], EPS);
+ }
+ }
+
+ do {
+ changed = 0;
+ for (i=0; i < stb_arr_len(productions); ++i) {
+ int j, nt = encode_nonterm(productions[i][0]);
+ for (j=2; productions[i][j]; ++j) {
+ int z = encode_symbol(productions[i][j]);
+ changed |= stb_bitset_unioneq_changed(first[nt], first[z], symset);
+ if (!stb_bitset_testbit(first[z], EPS))
+ break;
+ }
+ if (!productions[i][j] && !stb_bitset_testbit(first[nt], EPS)) {
+ stb_bitset_setbit(first[nt], EPS);
+ changed = 1;
+ }
+ }
+ } while (changed);
+ return first;
+}
+
+stb_bitset **compute_follow(short ** productions, stb_bitset **first, int start)
+{
+ int i,j,changed;
+ stb_bitset **follow = malloc(sizeof(*follow) * num_symbols);
+
+ assert(symset);
+ for (i=0; i < num_symbols; ++i)
+ follow[i] = (i >= first_nonterm ? stb_bitset_new(0, symset) : NULL);
+
+ stb_bitset_setbit(follow[start], END);
+ do {
+ changed = 0;
+ for (i=0; i < stb_arr_len(productions); ++i) {
+ int nt = encode_nonterm(productions[i][0]);
+ for (j=2; productions[i][j]; ++j) {
+ if (productions[i][j] < 0) {
+ int k,z = encode_nonterm(productions[i][j]);
+ for (k=j+1; productions[i][k]; ++k) {
+ int q = encode_symbol(productions[i][k]);
+ changed |= stb_bitset_unioneq_changed(follow[z], first[q], symset);
+ if (!stb_bitset_testbit(first[q], EPS))
+ break;
+ }
+ if (!productions[i][k] == 0)
+ changed |= stb_bitset_unioneq_changed(follow[z], follow[nt], symset);
+ }
+ }
+ }
+ } while (changed);
+
+ for (i=first_nonterm; i < num_symbols; ++i)
+ stb_bitset_clearbit(follow[i], EPS);
+
+ return follow;
+}
+
+void first_for_prod_plus_sym(stb_bitset **first, stb_bitset *out, short *prod, int symbol)
+{
+ stb_bitset_clearall(out, symset);
+ for(;*prod;++prod) {
+ int z = encode_symbol(*prod);
+ stb_bitset_unioneq_changed(out, first[z], symset);
+ if (!stb_bitset_testbit(first[z], EPS))
+ return;
+ }
+ stb_bitset_unioneq_changed(out, first[symbol], symset);
+}
+
+#define Item(p,c,t) ((void *) (((t) << 18) + ((c) << 12) + ((p) << 2)))
+#define ItemProd(i) ((((uint32) (i)) >> 2) & 1023)
+#define ItemCursor(i) ((((uint32) (i)) >> 12) & 63)
+#define ItemLookahead(i) (((uint32) (i)) >> 18)
+
+static void pc(stb_ps *p)
+{
+}
+
+typedef struct
+{
+ short *prod;
+ int prod_num;
+} ProdRef;
+
+typedef struct
+{
+ stb_bitset **first;
+ stb_bitset **follow;
+ short ** prod;
+ ProdRef ** prod_by_nt;
+} Grammar;
+
+stb_ps *itemset_closure(Grammar g, stb_ps *set)
+{
+ stb_bitset *lookahead;
+ int changed,i,j,k, list_len;
+ if (set == NULL) return set;
+ lookahead = stb_bitset_new(0, symset);
+ do {
+ void **list = stb_ps_getlist(set, &list_len);
+ changed = 0;
+ for (i=0; i < list_len; ++i) {
+ ProdRef *prod;
+ int nt, *looklist;
+ int p = ItemProd(list[i]), c = ItemCursor(list[i]), t = ItemLookahead(list[i]);
+ if (g.prod[p][c] >= 0) continue;
+ nt = encode_nonterm(g.prod[p][c]);
+ first_for_prod_plus_sym(g.first, lookahead, g.prod[p]+c+1, t);
+ looklist = stb_bitset_getlist(lookahead, 1, first_nonterm);
+
+ prod = g.prod_by_nt[nt];
+ for (j=0; j < stb_arr_len(prod); ++j) {
+ assert(prod[j].prod[0] == g.prod[p][c]);
+ // matched production; now iterate terminals
+ for (k=0; k < stb_arr_len(looklist); ++k) {
+ void *item = Item(prod[j].prod_num,2,looklist[k]);
+ if (!stb_ps_find(set, item)) {
+ changed = 1;
+ set = stb_ps_add(set, item);
+ pc(set);
+ }
+ }
+ }
+ stb_arr_free(looklist);
+ }
+ free(list);
+ } while (changed);
+ free(lookahead);
+ return set;
+}
+
+stb_ps *itemset_goto(Grammar g, stb_ps *set, int sym)
+{
+ int i, listlen;
+ void **list = stb_ps_fastlist(set, &listlen);
+ stb_ps *out = NULL;
+ for (i=0; i < listlen; ++i) {
+ int p,c;
+ if (!stb_ps_fastlist_valid(list[i])) continue;
+ p = ItemProd(list[i]), c = ItemCursor(list[i]);
+ if (encode_symbol(g.prod[p][c]) == sym) {
+ void *z = Item(p,c+1,ItemLookahead(list[i]));
+ if (!stb_ps_find(out, z))
+ out = stb_ps_add(out, z);
+ pc(out);
+ }
+ }
+ return itemset_closure(g, out);
+}
+
+void itemset_all_nextsym(Grammar g, stb_bitset *out, stb_ps *set)
+{
+ int i, listlen;
+ void **list = stb_ps_fastlist(set, &listlen);
+ stb_bitset_clearall(out, symset);
+ pc(set);
+ for (i=0; i < listlen; ++i) {
+ if (stb_ps_fastlist_valid(list[i])) {
+ int p = ItemProd(list[i]);
+ int c = ItemCursor(list[i]);
+ if (g.prod[p][c])
+ stb_bitset_setbit(out, encode_symbol(g.prod[p][c]));
+ }
+ }
+}
+
+stb_ps ** generate_items(Grammar g, int start_prod)
+{
+ stb_ps ** all=NULL;
+ int i,j,k;
+ stb_bitset *try = stb_bitset_new(0,symset);
+ stb_ps *set = NULL;
+ void *item = Item(start_prod, 2, END);
+ set = stb_ps_add(set, item);
+ pc(set);
+ set = itemset_closure(g, set);
+ pc(set);
+ stb_arr_push(all, set);
+ for (i = 0; i < stb_arr_len(all); ++i) {
+ // only try symbols that appear in all[i]... there's a smarter way to do this,
+ // which is to take all[i], and divide it up by symbol
+ pc(all[i]);
+ itemset_all_nextsym(g, try, all[i]);
+ for (j = 1; j < num_symbols; ++j) {
+ if (stb_bitset_testbit(try, j)) {
+ stb_ps *out;
+ if (stb_arr_len(all) > 4) pc(all[4]);
+ if (i == 1 && j == 29) {
+ if (stb_arr_len(all) > 4) pc(all[4]);
+ out = itemset_goto(g, all[i], j);
+ if (stb_arr_len(all) > 4) pc(all[4]);
+ } else
+ out = itemset_goto(g, all[i], j);
+ pc(out);
+ if (stb_arr_len(all) > 4) pc(all[4]);
+ if (out != NULL) {
+ // add it to the array if it's not already there
+ for (k=0; k < stb_arr_len(all); ++k)
+ if (stb_ps_eq(all[k], out))
+ break;
+ if (k == stb_arr_len(all)) {
+ stb_arr_push(all, out);
+ pc(out);
+ if (stb_arr_len(all) > 4) pc(all[4]);
+ } else
+ stb_ps_delete(out);
+ }
+ }
+ }
+ }
+ free(try);
+ return all;
+}
+
+typedef struct
+{
+ int num_stack;
+ int function;
+} Reduction;
+
+typedef struct
+{
+ short *encode_term;
+ Reduction *reductions;
+ short **action_goto; // terminals are action, nonterminals are goto
+ int start;
+ int end_term;
+} Parser;
+
+enum
+{
+ A_error, A_accept, A_shift, A_reduce, A_conflict
+};
+
+typedef struct
+{
+ uint8 type;
+ uint8 cursor;
+ short prod;
+ short value;
+} Action;
+
+Parser *parser_create(short **productions, int num_prod, int start_nt, int end_term)
+{
+ short *mini_rule = malloc(4 * sizeof(mini_rule[0]));
+ Action *actions;
+ Grammar g;
+ stb_ps ** sets;
+ Parser *p = malloc(sizeof(*p));
+ int i,j,n;
+ stb_bitset *mapped;
+ int min_s=0, max_s=0, termset, ntset, num_states, num_reductions, init_prod;
+
+ int synth_start;
+
+ // remap sparse terminals and nonterminals
+
+ for (i=0; i < num_prod; ++i) {
+ for (j=2; productions[i][j]; ++j) {
+ if (productions[i][j] < min_s) min_s = productions[i][j];
+ if (productions[i][j] > max_s) max_s = productions[i][j];
+ }
+ }
+ synth_start = --min_s;
+
+ termset = (max_s + 32) >> 5;
+ ntset = (~min_s + 32) >> 5;
+ memset(encode_term, 0, sizeof(encode_term));
+ memset(encode_nonterm, 0, sizeof(encode_nonterm));
+
+ mapped = stb_bitset_new(0, termset);
+ n = 2;
+ for (i=0; i < num_prod; ++i)
+ for (j=2; productions[i][j]; ++j)
+ if (productions[i][j] > 0)
+ if (!stb_bitset_testbit(mapped, productions[i][j])) {
+ stb_bitset_setbit(mapped, productions[i][j]);
+ encode_term[productions[i][j]] = n++;
+ }
+ free(mapped);
+
+ first_nonterm = n;
+
+ mapped = stb_bitset_new(0, ntset);
+ for (i=0; i < num_prod; ++i)
+ for (j=2; productions[i][j]; ++j)
+ if (productions[i][j] < 0)
+ if (!stb_bitset_testbit(mapped, ~productions[i][j])) {
+ stb_bitset_setbit(mapped, ~productions[i][j]);
+ encode_nonterm[~productions[i][j]] = n++;
+ }
+ free(mapped);
+
+ // add a special start state for internal processing
+ p->start = n++;
+ encode_nonterm[synth_start] = p->start;
+ mini_rule[0] = synth_start;
+ mini_rule[1] = -32768;
+ mini_rule[2] = start_nt;
+ mini_rule[3] = 0;
+
+ p->end_term = end_term;
+
+ num_symbols = n;
+
+ // create tables
+ g.prod = NULL;
+ g.prod_by_nt = malloc(num_symbols * sizeof(g.prod_by_nt[0]));
+ for (i=0; i < num_symbols; ++i)
+ g.prod_by_nt[i] = NULL;
+
+ for (i=0; i < num_prod; ++i) {
+ stb_arr_push(g.prod, productions[i]);
+ }
+ init_prod = stb_arr_len(g.prod);
+ stb_arr_push(g.prod, mini_rule);
+
+ num_reductions = stb_arr_len(g.prod);
+ p->reductions = malloc(num_reductions * sizeof(*p->reductions));
+
+ symset = (num_symbols + 31) >> 5;
+ g.first = compute_first(g.prod);
+ g.follow = compute_follow(g.prod, g.first, p->start);
+
+ for (i=0; i < stb_arr_len(g.prod); ++i) {
+ ProdRef pr = { g.prod[i], i };
+ stb_arr_push(g.prod_by_nt[encode_nonterm(g.prod[i][0])], pr);
+ }
+
+ sets = generate_items(g, init_prod);
+
+ num_states = stb_arr_len(sets);
+ // now generate tables
+
+ actions = malloc(sizeof(*actions) * first_nonterm);
+ p->action_goto = (short **) stb_array_block_alloc(num_states, sizeof(short) * num_symbols);
+ for (i=0; i < num_states; ++i) {
+ int j,n;
+ void **list = stb_ps_getlist(sets[i], &n);
+ memset(actions, 0, sizeof(*actions) * first_nonterm);
+ for (j=0; j < n; ++j) {
+ int p = ItemProd(list[j]), c = ItemCursor(list[j]), t = ItemLookahead(list[j]);
+ if (g.prod[p][c] == 0) {
+ if (p == init_prod) {
+ // @TODO: check for conflicts
+ assert(actions[t].type == A_error || actions[t].type == A_accept);
+ actions[t].type = A_accept;
+ } else {
+ // reduce production p
+ if (actions[t].type == A_reduce) {
+ // is it the same reduction we already have?
+ if (actions[t].prod != p) {
+ // no, it's a reduce-reduce conflict!
+ printf("Reduce-reduce conflict for rule %d and %d, lookahead %d\n", p, actions[t].prod, t);
+ // @TODO: use precedence
+ actions[t].type = A_conflict;
+ }
+ } else if (actions[t].type == A_shift) {
+ printf("Shift-reduce conflict for rule %d and %d, lookahead %d\n", actions[t].prod, p, t);
+ actions[t].type = A_conflict;
+ } else if (actions[t].type == A_accept) {
+ assert(0);
+ } else if (actions[t].type == A_error) {
+ actions[t].type = A_reduce;
+ actions[t].prod = p;
+ }
+ }
+ } else if (g.prod[p][c] > 0) {
+ int a = encode_symbol(g.prod[p][c]), k;
+ stb_ps *out = itemset_goto(g, sets[i], a);
+ for (k=0; k < stb_arr_len(sets); ++k)
+ if (stb_ps_eq(sets[k], out))
+ break;
+ assert(k < stb_arr_len(sets));
+ // shift k
+ if (actions[a].type == A_shift) {
+ if (actions[a].value != k) {
+ printf("Shift-shift conflict! Rule %d and %d with lookahead %d/%d\n", actions[a].prod, p, a,t);
+ actions[a].type = A_conflict;
+ }
+ } else if (actions[a].type == A_reduce) {
+ printf("Shift-reduce conflict for rule %d and %d, lookahead %d/%d\n", p, actions[a].prod, a,t);
+ actions[a].type = A_conflict;
+ } else if (actions[a].type == A_accept) {
+ assert(0);
+ } else if (actions[a].type == A_error) {
+ actions[a].type = A_shift;
+ actions[a].prod = p;
+ actions[a].cursor = c;
+ actions[a].value = k;
+ }
+ }
+ }
+ // @TODO: recompile actions into p->action_goto
+ }
+
+ free(mini_rule);
+ stb_pointer_array_free(g.first , num_symbols); free(g.first );
+ stb_pointer_array_free(g.follow, num_symbols); free(g.follow);
+ stb_arr_free(g.prod);
+ for (i=0; i < num_symbols; ++i)
+ stb_arr_free(g.prod_by_nt[i]);
+ free(g.prod_by_nt);
+ for (i=0; i < stb_arr_len(sets); ++i)
+ stb_ps_delete(sets[i]);
+ stb_arr_free(sets);
+
+ return p;
+}
+
+void parser_destroy(Parser *p)
+{
+ free(p);
+}
+
+#if 0
+enum nonterm
+{
+ N_globals = -50,
+ N_global, N_vardef, N_varinitlist, N_varinit, N_funcdef, N_optid, N_optparamlist,
+ N_paramlist, N_param, N_optinit, N_optcomma, N_statements, N_statement,
+ N_optexpr, N_assign, N_if, N_ifcore, N_else, N_dictdef, N_dictdef2,
+ N_dictdefitem, N_expr,
+ N__last
+};
+
+short grammar[][10] =
+{
+ { N_globals , 0, N_globals, N_global },
+ { N_globals , 0 },
+ { N_global , 0, N_vardef },
+ { N_global , 0, N_funcdef },
+ { N_vardef , 0, ST_var, N_varinitlist, },
+ { N_varinitlist, 0, N_varinitlist, ',', N_varinit },
+ { N_varinitlist, 0, N_varinit, },
+ { N_varinit , 0, ST_id, N_optinit, },
+ { N_funcdef , 0, ST_func, N_optid, '(', N_optparamlist, ')', N_statements, ST_end },
+ { N_optid , 0, ST_id },
+ { N_optid , 0, },
+ { N_optparamlist, 0, },
+ { N_optparamlist, 0, N_paramlist, N_optcomma },
+ { N_paramlist , 0, N_paramlist, ',', N_param },
+ { N_paramlist , 0, N_param },
+ { N_param , 0, ST_id, N_optinit },
+ { N_optinit , 0, '=', N_expr },
+ { N_optinit , 0, },
+ { N_optcomma , 0, ',' },
+ { N_optcomma , 0, },
+ { N_statements , 0, N_statements, N_statement },
+ { N_statement , 0, N_statement, ';' },
+ { N_statement , 0, N_varinit },
+ { N_statement , 0, ST_return, N_expr },
+ { N_statement , 0, ST_break , N_optexpr },
+ { N_optexpr , 0, N_expr },
+ { N_optexpr , 0, },
+ { N_statement , 0, ST_continue },
+ { N_statement , 0, N_assign },
+ { N_assign , 0, N_expr, '=', N_assign },
+ //{ N_assign , 0, N_expr },
+ { N_statement , 0, ST_while, N_expr, N_statements, ST_end },
+ { N_statement , 0, ST_if, N_if, },
+ { N_if , 0, N_ifcore, ST_end, },
+ { N_ifcore , 0, N_expr, ST_then, N_statements, N_else, ST_end },
+ { N_else , 0, ST_elseif, N_ifcore },
+ { N_else , 0, ST_else, N_statements },
+ { N_else , 0, },
+ { N_dictdef , 0, N_dictdef2, N_optcomma },
+ { N_dictdef2 , 0, N_dictdef2, ',', N_dictdefitem },
+ { N_dictdef2 , 0, N_dictdefitem },
+ { N_dictdefitem, 0, ST_id, '=', N_expr },
+ { N_dictdefitem, 0, N_expr },
+ { N_expr , 0, ST_number },
+ { N_expr , 0, ST_string },
+ { N_expr , 0, ST_id },
+ { N_expr , 0, N_funcdef },
+ { N_expr , 0, '-', N_expr },
+ { N_expr , 0, '{', N_dictdef, '}' },
+ { N_expr , 0, '(', N_expr, ')' },
+ { N_expr , 0, N_expr, '.', ST_id },
+ { N_expr , 0, N_expr, '[', N_expr, ']' },
+ { N_expr , 0, N_expr, '(', N_dictdef, ')' },
+#if 0
+#define BINOP(op) { N_expr, 0, N_expr, op, N_expr }
+ BINOP(ST_and), BINOP(ST_or), BINOP(ST_eq), BINOP(ST_ne),
+ BINOP(ST_le), BINOP(ST_ge), BINOP('>') , BINOP('<' ),
+ BINOP('&'), BINOP('|'), BINOP('^'), BINOP('+'), BINOP('-'),
+ BINOP('*'), BINOP('/'), BINOP('%'),
+#undef BINOP
+#endif
+};
+
+short *grammar_list[stb_arrcount(grammar)];
+
+void test_parser_generator(void)
+{
+ Parser *p;
+ int i;
+ assert(N__last <= 0);
+ for (i=0; i < stb_arrcount(grammar); ++i)
+ grammar_list[i] = grammar[i];
+ p = parser_create(grammar_list, stb_arrcount(grammar), N_globals, 0);
+ parser_destroy(p);
+}
+#endif
+
+
+#if 0
+// stb_threadtest.c
+
+
+#include <windows.h>
+#define STB_DEFINE
+//#define STB_THREAD_TEST
+#include "../stb.h"
+
+#define NUM_WORK 100
+
+void *work_consumer(void *p)
+{
+ stb__thread_sleep(20);
+ return NULL;
+}
+
+int pass;
+stb_threadqueue *tq1, *tq2, *tq3, *tq4;
+volatile float t1,t2;
+
+// with windows.h
+// Worked correctly with 100,000,000 enqueue/dequeue WAITLESS
+// (770 passes, 170000 per pass)
+// Worked correctly with 2,500,000 enqueue/dequeue !WAITLESS
+// (15 passes, 170000 per pass)
+// Worked correctly with 1,500,000 enqueue/dequeue WAITLESS && STB_THREAD_TEST
+// (9 passes, 170000 per pass)
+// without windows.h
+// Worked correctly with 1,000,000 enqueue/dequeue WAITLESS && STB_THREAD_TEST
+// (6 passes, 170000 per pass)
+// Worked correctly with 500,000 enqueue/dequeue !WAITLESS && STB_THREAD_TEST
+// (3 passes, 170000 per pass)
+// Worked correctly with 1,000,000 enqueue/dequeue WAITLESS
+// (15 passes, 170000 per pass)
+#define WAITLESS
+
+volatile int table[1000*1000*10];
+
+void wait(int n)
+{
+#ifndef WAITLESS
+ int j;
+ float y;
+ for (j=0; j < n; ++j)
+ y += 1 / (t1+j);
+ t2 = y;
+#endif
+}
+
+void *tq1_consumer(void *p)
+{
+ for(;;) {
+ int z;
+ float y = 0;
+ stb_threadq_get_block(tq1, &z);
+ wait(5000);
+ table[z] = pass;
+ }
+}
+
+void *tq2_consumer(void *p)
+{
+ for(;;) {
+ int z;
+ if (stb_threadq_get(tq2, &z))
+ table[z] = pass;
+ wait(1000);
+ }
+}
+
+void *tq3_consumer(void *p)
+{
+ for(;;) {
+ int z;
+ stb_threadq_get_block(tq3, &z);
+ table[z] = pass;
+ wait(500);
+ }
+}
+
+void *tq4_consumer(void *p)
+{
+ for (;;) {
+ int z;
+ stb_threadq_get_block(tq4, &z);
+ table[z] = pass;
+ wait(500);
+ }
+}
+
+typedef struct
+{
+ int start, end;
+ stb_threadqueue *tq;
+ int delay;
+} write_data;
+
+void *writer(void *q)
+{
+ int i;
+ write_data *p = (write_data *) q;
+ for (i=p->start; i < p->end; ++i) {
+ stb_threadq_add_block(p->tq, &i);
+ #ifndef WAITLESS
+ if (p->delay) stb__thread_sleep(p->delay);
+ else {
+ int j;
+ float z = 0;
+ for (j=0; j <= 20; ++j)
+ z += 1 / (t1+j);
+ t2 = z;
+ }
+ #endif
+ }
+ return NULL;
+}
+
+write_data info[256];
+int pos;
+
+void start_writer(int z, int count, stb_threadqueue *tq, int delay)
+{
+ info[z].start = pos;
+ info[z].end = pos+count;
+ info[z].tq = tq;
+ info[z].delay = delay;
+ stb_create_thread(writer, &info[z]);
+ pos += count;
+}
+
+int main(int argc, char **argv)
+{
+ int i;
+ stb_sync s = stb_sync_new();
+ stb_sync_set_target(s, NUM_WORK+1);
+ stb_work_numthreads(2);
+ for (i=0; i < NUM_WORK; ++i) {
+ stb_work_reach(work_consumer, NULL, NULL, s);
+ }
+ printf("Started stb_work test.\n");
+
+ t1 = 1;
+
+ // create the queues
+ tq1 = stb_threadq_new(4, 4, TRUE , TRUE);
+ tq2 = stb_threadq_new(4, 4, TRUE , FALSE);
+ tq3 = stb_threadq_new(4, 4, FALSE, TRUE);
+ tq4 = stb_threadq_new(4, 4, FALSE, FALSE);
+
+ // start the consumers
+ stb_create_thread(tq1_consumer, NULL);
+ stb_create_thread(tq1_consumer, NULL);
+ stb_create_thread(tq1_consumer, NULL);
+
+ stb_create_thread(tq2_consumer, NULL);
+
+ stb_create_thread(tq3_consumer, NULL);
+ stb_create_thread(tq3_consumer, NULL);
+ stb_create_thread(tq3_consumer, NULL);
+ stb_create_thread(tq3_consumer, NULL);
+ stb_create_thread(tq3_consumer, NULL);
+ stb_create_thread(tq3_consumer, NULL);
+ stb_create_thread(tq3_consumer, NULL);
+
+ stb_create_thread(tq4_consumer, NULL);
+
+ for (pass=1; pass <= 5000; ++pass) {
+ int z = 0;
+ int last_n = -1;
+ int identical = 0;
+ pos = 0;
+ start_writer(z++, 50000, tq1, 0);
+ start_writer(z++, 50000, tq1, 0);
+ start_writer(z++, 50000, tq1, 0);
+
+ start_writer(z++, 5000, tq2, 1);
+ start_writer(z++, 3000, tq2, 3);
+ start_writer(z++, 2000, tq2, 5);
+
+ start_writer(z++, 5000, tq3, 3);
+
+ start_writer(z++, 5000, tq4, 3);
+ #ifndef WAITLESS
+ stb__thread_sleep(8000);
+ #endif
+ for(;;) {
+ int n =0;
+ for (i=0; i < pos; ++i) {
+ if (table[i] == pass)
+ ++n;
+ }
+ if (n == pos) break;
+ if (n == last_n) {
+ ++identical;
+ if (identical == 3) {
+ printf("Problem slots:\n");
+ for (i=0; i < pos; ++i) {
+ if (table[i] != pass) printf("%d ", i);
+ }
+ printf("\n");
+ } else {
+ if (identical < 3)
+ printf("Processed %d of %d\n", n, pos);
+ else
+ printf(".");
+ }
+ } else {
+ identical = 0;
+ printf("Processed %d of %d\n", n, pos);
+ }
+ last_n = n;
+ #ifdef WAITLESS
+ stb__thread_sleep(750);
+ #else
+ stb__thread_sleep(3000);
+ #endif
+ }
+ printf("Finished pass %d\n", pass);
+ }
+
+ stb_sync_reach_and_wait(s);
+ printf("stb_work test completed ok.\n");
+ return 0;
+}
+#endif
+
+
+#if 0
+//////////////////////////////////////////////////////////////////////////////
+//
+// collapse tree leaves up to parents until we only have N nodes
+// useful for cmirror summaries
+
+typedef struct stb_summary_tree
+{
+ struct stb_summary_tree **children;
+ int num_children;
+ float weight;
+} stb_summary_tree;
+
+STB_EXTERN void *stb_summarize_tree(void *tree, int limit, float reweight);
+
+#ifdef STB_DEFINE
+
+typedef struct stb_summary_tree2
+{
+ STB__ARR(struct stb_summary_tree2 *) children;
+ int num_children;
+ float weight;
+ float weight_with_all_children;
+ float makes_target_weight;
+ float weight_at_target;
+ stb_summary_tree *original;
+ struct stb_summary_tree2 *target;
+ STB__ARR(struct stb_summary_tree2 *) targeters;
+} stb_summary_tree2;
+
+static stb_summary_tree2 *stb__summarize_clone(stb_summary_tree *t)
+{
+ int i;
+ stb_summary_tree2 *s;
+ s = (stb_summary_tree2 *) malloc(sizeof(*s));
+ s->original = t;
+ s->weight = t->weight;
+ s->weight_with_all_children = 0;
+ s->weight_at_target = 0;
+ s->target = NULL;
+ s->targeters = NULL;
+ s->num_children = t->num_children;
+ s->children = NULL;
+ for (i=0; i < s->num_children; ++i)
+ stb_arr_push(s->children, stb__summarize_clone(t->children[i]));
+ return s;
+}
+
+static float stb__summarize_compute_targets(stb_summary_tree2 *parent, stb_summary_tree2 *node, float reweight, float weight)
+{
+ float total = 0;
+ if (node->weight == 0 && node->num_children == 1 && parent) {
+ node->target = parent;
+ return stb__summarize_compute_targets(parent, node->children[0], reweight, weight*reweight);
+ } else {
+ float total=0;
+ int i;
+ for (i=0; i < node->num_children; ++i)
+ total += stb__summarize_compute_targets(node, node->children[i], reweight, reweight);
+ node->weight_with_all_children = total + node->weight;
+ if (parent && node->weight_with_all_children) {
+ node->target = parent;
+ node->weight_at_target = node->weight_with_all_children * weight;
+ node->makes_target_weight = node->weight_at_target + parent->weight;
+ stb_arr_push(parent->targeters, node);
+ } else {
+ node->target = NULL;
+ node->weight_at_target = node->weight;
+ node->makes_target_weight = 0;
+ }
+ return node->weight_with_all_children * weight;
+ }
+}
+
+static stb_summary_tree2 ** stb__summarize_make_array(STB__ARR(stb_summary_tree2 *) all, stb_summary_tree2 *tree)
+{
+ int i;
+ stb_arr_push(all, tree);
+ for (i=0; i < tree->num_children; ++i)
+ all = stb__summarize_make_array(all, tree->children[i]);
+ return all;
+}
+
+typedef stb_summary_tree2 * stb__stree2;
+stb_define_sort(stb__summarysort, stb__stree2, (*a)->makes_target_weight < (*b)->makes_target_weight)
+
+void *stb_summarize_tree(void *tree, int limit, float reweight)
+{
+ int i,j,k;
+ STB__ARR(stb_summary_tree *) ret=NULL;
+ STB__ARR(stb_summary_tree2 *) all=NULL;
+
+ // first clone the tree so we can manipulate it
+ stb_summary_tree2 *t = stb__summarize_clone((stb_summary_tree *) tree);
+ if (reweight < 1) reweight = 1;
+
+ // now compute how far up the tree each node would get pushed
+ // there's no value in pushing a node up to an empty node with
+ // only one child, so we keep pushing it up
+ stb__summarize_compute_targets(NULL, t, reweight, 1);
+
+ all = stb__summarize_make_array(all, t);
+
+ // now we want to iteratively find the smallest 'makes_target_weight',
+ // update that, and then fix all the others (which will be all descendents)
+ // to do this efficiently, we need a heap or a sorted binary tree
+ // what we have is an array. maybe we can insertion sort the array?
+ stb__summarysort(all, stb_arr_len(all));
+
+ for (i=0; i < stb_arr_len(all) - limit; ++i) {
+ stb_summary_tree2 *src, *dest;
+ src = all[i];
+ dest = all[i]->target;
+ if (src->makes_target_weight == 0) continue;
+ assert(dest != NULL);
+
+ for (k=0; k < stb_arr_len(all); ++k)
+ if (all[k] == dest)
+ break;
+ assert(k != stb_arr_len(all));
+ assert(i < k);
+
+ // move weight from all[i] to target
+ src->weight = dest->makes_target_weight;
+ src->weight = 0;
+ src->makes_target_weight = 0;
+ // recompute effect of other descendents
+ for (j=0; j < stb_arr_len(dest->targeters); ++j) {
+ if (dest->targeters[j]->weight) {
+ dest->targeters[j]->makes_target_weight = dest->weight + dest->targeters[j]->weight_at_target;
+ assert(dest->targeters[j]->makes_target_weight <= dest->weight_with_all_children);
+ }
+ }
+ STB_(stb__summarysort,_ins_sort)(all+i, stb_arr_len(all)-i);
+ }
+ // now the elements in [ i..stb_arr_len(all) ) are the relevant ones
+ for (; i < stb_arr_len(all); ++i)
+ stb_arr_push(ret, all[i]->original);
+
+ // now free all our temp data
+ for (i=0; i < stb_arr_len(all); ++i) {
+ stb_arr_free(all[i]->children);
+ free(all[i]);
+ }
+ stb_arr_free(all);
+ return ret;
+}
+#endif
+
+#endif
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