ref: f7e5af47f117be34669dc1e532d525dcbbff73f0
dir: /jas_string.c/
/* * Copyright (c) 1999-2000 Image Power, Inc. and the University of * British Columbia. * Copyright (c) 2001-2002 Michael David Adams. * All rights reserved. */ /* __START_OF_JASPER_LICENSE__ * * JasPer License Version 2.0 * * Copyright (c) 2001-2006 Michael David Adams * Copyright (c) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * * All rights reserved. * * Permission is hereby granted, free of charge, to any person (the * "User") obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, and/or sell copies of the Software, and to permit * persons to whom the Software is furnished to do so, subject to the * following conditions: * * 1. The above copyright notices and this permission notice (which * includes the disclaimer below) shall be included in all copies or * substantial portions of the Software. * * 2. The name of a copyright holder shall not be used to endorse or * promote products derived from the Software without specific prior * written permission. * * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. * * __END_OF_JASPER_LICENSE__ */ /* * String Library * * $Id$ */ /******************************************************************************\ * Includes \******************************************************************************/ #define JAS_FOR_INTERNAL_USE_ONLY #include "jasper/jas_string.h" #include "jasper/jas_malloc.h" #include "jasper/jas_debug.h" /******************************************************************************\ * Miscellaneous Functions \******************************************************************************/ /* This function is equivalent to the popular but non-standard (and not-always-available) strdup function. */ char *jas_strdup(const char *s) { size_t n; char *p; n = strlen(s) + 1; if (!(p = jas_malloc(n))) { return 0; } strcpy(p, s); return p; } char *jas_strtok(char *s, const char *delim, char **save_ptr) { #if 1 char *result; char *end; if (!s) { s = *save_ptr; } if (*s != '\0') { s += strspn(s, delim); if (*s != '\0') { end = s + strcspn(s, delim); if (*end == '\0') { *save_ptr = end; } else { *end = '\0'; *save_ptr = end + 1; } result = s; } else { *save_ptr = s; result = 0; } } else { *save_ptr = s; result = 0; } return result; #else return strtok_r(str, delim, save_ptr); #endif } JAS_EXPORT int jas_stringtokenize(const char *string, const char *delim, char ***tokens_buf, size_t *max_tokens_buf, size_t *num_tokens_buf) { char **tokens = 0; size_t max_tokens = 0; size_t num_tokens = 0; char **new_tokens; size_t new_max_tokens; char *buffer; int ret = 0; char *token = 0; if (!(buffer = jas_strdup(string))) { ret = -1; goto done; } //new_max_tokens = 1; new_max_tokens = 0; if (new_max_tokens > 0) { if (!(tokens = jas_malloc(new_max_tokens * sizeof(char *)))) { ret = -1; goto done; } max_tokens = new_max_tokens; } bool first = true; char *saveptr = 0; for (;;) { char *cp; if (!(cp = jas_strtok(first ? buffer : 0, delim, &saveptr))) { break; } first = false; if (!(token = jas_strdup(cp))) { ret = -1; goto done; } if (num_tokens == max_tokens) { new_max_tokens = max_tokens ? 2 * max_tokens : 1; if (!(new_tokens = jas_realloc(tokens, new_max_tokens * sizeof(char *)))) { ret = -1; goto done; } tokens = new_tokens; max_tokens = new_max_tokens; } assert(num_tokens < max_tokens); tokens[num_tokens] = token; token = 0; ++num_tokens; } done: if (buffer) { jas_free(buffer); } if (ret && tokens) { for (int i = 0; i < num_tokens; ++i) { jas_free(tokens[i]); } jas_free(tokens); tokens = 0; max_tokens = 0; num_tokens = 0; } if (token) { jas_free(token); } if (!ret) { *tokens_buf = tokens; *max_tokens_buf = max_tokens; *num_tokens_buf = num_tokens; } if (jas_get_debug_level() >= 100) { jas_eprintf("tokens %p; max_tokens %zu; num_tokens %zu\n", JAS_CAST(void *, tokens), max_tokens, num_tokens); for (int i = 0; i < num_tokens; ++i) { jas_eprintf("[%d] = %s\n", i, tokens[i]); } } return ret; }