зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
2.3 KiB
C
130 строки
2.3 KiB
C
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Web Sniffer.
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*
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* The Initial Developer of the Original Code is Erik van der Poel.
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* Portions created by Erik van der Poel are
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* Copyright (C) 1998,1999,2000 Erik van der Poel.
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* All Rights Reserved.
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*
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* Contributor(s):
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*/
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#include <malloc.h>
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#include <stdio.h>
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#include <string.h>
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#include "utils.h"
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unsigned char *
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appendString(const unsigned char *str1, const unsigned char *str2)
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{
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unsigned char *result;
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if (!str1)
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{
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return copyString(str2);
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}
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if (!str2)
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{
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return copyString(str1);
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}
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result = calloc(strlen((char *) str1) + strlen((char *) str2) + 1, 1);
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if (!result)
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{
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fprintf(stderr, "cannot calloc string\n");
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exit(0);
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}
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strcpy((char *) result, (char *) str1);
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strcat((char *) result, (char *) str2);
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return result;
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}
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unsigned char *
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copyString(const unsigned char *str)
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{
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unsigned char *result;
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if (!str)
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{
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return NULL;
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}
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result = (unsigned char *) strdup((char *) str);
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if (!result)
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{
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fprintf(stderr, "cannot strdup string\n");
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exit(0);
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}
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return result;
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}
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unsigned char *
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copySizedString(const unsigned char *str, int size)
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{
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unsigned char *result;
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result = calloc(size + 1, 1);
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if (!result)
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{
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fprintf(stderr, "cannot calloc string\n");
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exit(0);
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}
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strncpy((char *) result, (char *) str, size);
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result[size] = 0;
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return result;
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}
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unsigned char *
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lowerCase(unsigned char *buf)
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{
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unsigned char c;
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unsigned char *p;
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p = buf;
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do
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{
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c = *p;
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if (('A' <= c) && (c <= 'Z'))
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{
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*p = c + 32;
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}
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p++;
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} while (c);
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return buf;
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}
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void *
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utilRealloc(void *ptr, size_t oldSize, size_t newSize)
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{
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unsigned char *end;
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unsigned char *p;
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unsigned char *ret;
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ret = realloc(ptr, newSize);
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if (ret && (newSize > oldSize))
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{
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end = &ret[newSize];
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for (p = &ret[oldSize]; p < end; p++)
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{
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*p = 0;
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}
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}
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return (void *) ret;
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}
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