mirror of
https://github.com/DarkPlacesEngine/gmqcc.git
synced 2024-11-23 20:33:05 +00:00
287 lines
9.8 KiB
C
287 lines
9.8 KiB
C
/*
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* Copyright (C) 2012
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* Dale Weiler
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdarg.h>
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#include <errno.h>
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#include "gmqcc.h"
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unsigned long long mem_ab = 0;
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unsigned long long mem_db = 0;
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unsigned long long mem_at = 0;
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unsigned long long mem_dt = 0;
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struct memblock_t {
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const char *file;
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unsigned int line;
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unsigned int byte;
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};
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void *util_memory_a(unsigned int byte, unsigned int line, const char *file) {
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struct memblock_t *info = malloc(sizeof(struct memblock_t) + byte);
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void *data =(void*)((uintptr_t)info+sizeof(struct memblock_t));
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if (!data) return NULL;
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info->line = line;
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info->byte = byte;
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info->file = file;
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util_debug("MEM", "allocation: % 8u (bytes) address 0x%08X @ %s:%u\n", byte, data, file, line);
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mem_at++;
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mem_ab += info->byte;
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return data;
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}
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void util_memory_d(void *ptrn, unsigned int line, const char *file) {
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if (!ptrn) return;
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void *data = (void*)((uintptr_t)ptrn-sizeof(struct memblock_t));
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struct memblock_t *info = (struct memblock_t*)data;
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util_debug("MEM", "released: % 8u (bytes) address 0x%08X @ %s:%u\n", info->byte, data, file, line);
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mem_db += info->byte;
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mem_dt++;
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free(data);
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}
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void util_meminfo() {
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if (!opts_memchk)
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return;
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util_debug("MEM", "Memory information:\n\
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Total allocations: %llu\n\
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Total deallocations: %llu\n\
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Total allocated: %llu (bytes)\n\
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Total deallocated: %llu (bytes)\n\
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Leaks found: lost %llu (bytes) in %d allocations\n",
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mem_at, mem_dt,
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mem_ab, mem_db,
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(mem_ab - mem_db),
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(mem_at - mem_dt)
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);
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}
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/*
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* Some string utility functions, because strdup uses malloc, and we want
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* to track all memory (without replacing malloc).
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*/
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char *util_strdup(const char *s) {
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size_t len = 0;
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char *ptr = NULL;
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if (!s)
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return NULL;
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if ((len = strlen(s)) && (ptr = mem_a(len+1))) {
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memcpy(ptr, s, len);
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ptr[len] = '\0';
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}
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return ptr;
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}
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/*
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* Remove quotes from a string, escapes from \ in string
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* as well. This function shouldn't be used to create a
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* char array that is later freed (it uses pointer arith)
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*/
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char *util_strrq(char *s) {
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char *dst = s;
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char *src = s;
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char chr;
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while ((chr = *src++) != '\0') {
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if (chr == '\\') {
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*dst++ = chr;
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if ((chr = *src++) == '\0')
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break;
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*dst++ = chr;
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} else if (chr != '"')
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*dst++ = chr;
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}
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*dst = '\0';
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return dst;
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}
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/*
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* Remove newline from a string (if it exists). This is
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* done pointer wise instead of strlen(), and an array
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* access.
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*/
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char *util_strrnl(char *src) {
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if (!src) return NULL;
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char *cpy = src;
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while (*cpy && *cpy != '\n')
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cpy++;
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*cpy = '\0';
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return src;
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}
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void util_debug(const char *area, const char *ms, ...) {
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if (!opts_debug)
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return;
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va_list va;
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va_start(va, ms);
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fprintf (stdout, "DEBUG: ");
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fputc ('[', stdout);
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fprintf(stdout, "%s", area);
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fputs ("] ", stdout);
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vfprintf(stdout, ms, va);
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va_end (va);
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}
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/*
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* Endianess swapping, all data must be stored little-endian. This
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* reorders by stride and length, much nicer than other functions for
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* certian-sized types like short or int.
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*/
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void util_endianswap(void *m, int s, int l) {
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size_t w = 0;
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size_t i = 0;
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/* ignore if we're already LE */
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if(*((char *)&s))
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return;
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for(; w < l; w++) {
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for(; i < s << 1; i++) {
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unsigned char *p = (unsigned char *)m+w*s;
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unsigned char t = p[i];
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p[i] = p[s-i-1];
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p[s-i-1] = t;
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}
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}
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}
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/*
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* This is an implementation of CRC32. The polynomial has been offline
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* computed for faster generation at the cost of larger code size. This
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* is used to compute hashes for hash-table. This is not used for crc16
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* generation of progs header calculation.
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*/
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#define util_crc32_update(O,C) \
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(util_crc32_table[((C)^((unsigned char)O)) & 0xFF] ^ ((C)>>8))
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/* CRC polynomial 0xEDB88320 */
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static const uint32_t util_crc32_table[] = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
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0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
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0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
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0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
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0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
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0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
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0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
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};
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uint32_t util_crc32(const char *key, int len, register const short clamp) {
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register uint32_t hash = 0xFFFFFFFF;
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for (; len; --len, ++key)
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hash = util_crc32_update(*key, hash);
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return (~hash) % clamp;
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}
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/*
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* Implements libc getline for systems that don't have it, which is
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* assmed all. This works the same as getline().
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*/
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int util_getline(char **lineptr, size_t *n, FILE *stream) {
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int chr;
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int ret;
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char *pos;
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if (!lineptr || !n || !stream)
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return -1;
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if (!*lineptr) {
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if (!(*lineptr = mem_a((*n = 64))))
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return -1;
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}
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chr = *n;
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pos = *lineptr;
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for (;;) {
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int c = getc(stream);
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if (chr < 2) {
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char *tmp = mem_a((*n+=(*n>16)?*n:64));
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if (!tmp)
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return -1;
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chr = *n + *lineptr - pos;
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strcpy(tmp,*lineptr);
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if (!(*lineptr = tmp)) {
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mem_d (tmp);
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return -1;
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}
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pos = *n - chr + *lineptr;
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}
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if (ferror(stream))
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return -1;
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if (c == EOF) {
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if (pos == *lineptr)
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return -1;
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else
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break;
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}
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*pos++ = c;
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chr--;
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if (c == '\n')
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break;
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}
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*pos = '\0';
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return (ret = pos - *lineptr);
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}
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