mirror of
https://github.com/servalproject/serval-dna.git
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d38ce66c95
New executable in Makefile 'all' target: tfw_createfile. New str.h function: str_to_ll_scaled().
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/*
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Serval string primitives
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Copyright (C) 2012 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "str.h"
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#include "log.h"
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int str_startswith(char *str, const char *substring, char **afterp)
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{
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while (*substring && *substring == *str)
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++substring, ++str;
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if (*substring)
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return 0;
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if (afterp)
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*afterp = str;
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return 1;
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}
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int strcase_startswith(char *str, const char *substring, char **afterp)
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{
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while (*substring && *str && toupper(*substring) == toupper(*str))
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++substring, ++str;
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if (*substring)
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return 0;
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if (afterp)
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*afterp = str;
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return 1;
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}
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int parse_argv(char *cmdline, char delim, char **argv, int max_argv)
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{
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int argc=0;
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if (*cmdline && argc<max_argv){
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argv[argc++]=cmdline;
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}
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// TODO quoted argument handling?
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while(*cmdline){
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if (*cmdline==delim){
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*cmdline=0;
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if (cmdline[1] && argc<max_argv)
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argv[argc++]=cmdline+1;
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}
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cmdline++;
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}
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return argc;
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}
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/* Like strstr() but doesn't depend on null termination */
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char *str_str(char *haystack, const char *needle, int haystack_len)
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{
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size_t needle_len = strlen(needle);
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if (needle_len == 0)
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return haystack;
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if (haystack_len >= needle_len) {
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for (; *haystack && haystack_len >= needle_len; ++haystack, --haystack_len)
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if (strncmp(haystack, needle, needle_len) == 0)
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return haystack;
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}
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return NULL;
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}
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int str_to_ll_scaled(const char *str, int base, long long *result, char **afterp)
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{
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if (!(isdigit(*str) || *str == '-' || *str == '+'))
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return 0;
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char *end;
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long long value = strtoll(str, &end, base);
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if (end == str)
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return 0;
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switch (*end) {
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case '\0': break;
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case 'k': value *= 1000LL; ++end; break;
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case 'K': value *= 1024LL; ++end; break;
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case 'm': value *= 1000LL * 1000LL; ++end; break;
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case 'M': value *= 1024LL * 1024LL; ++end; break;
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case 'g': value *= 1000LL * 1000LL * 1000LL; ++end; break;
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case 'G': value *= 1024LL * 1024LL * 1024LL; ++end; break;
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default: return 0;
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}
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if (afterp)
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*afterp = end;
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else if (*end)
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return 0;
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*result = value;
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return 1;
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}
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