mirror of
https://github.com/AuxXxilium/kmod.git
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146 lines
2.9 KiB
C
146 lines
2.9 KiB
C
/*
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* libkmod - interface to kernel module operations
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*
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* Copyright (C) 2011 ProFUSION embedded systems
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <ctype.h>
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#include "libkmod.h"
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#include "libkmod-private.h"
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/*
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* Read one logical line from a configuration file.
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*
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* Line endings may be escaped with backslashes, to form one logical line from
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* several physical lines. No end of line character(s) are included in the
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* result.
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*
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* If linenum is not NULL, it is incremented by the number of physical lines
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* which have been read.
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*/
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char *getline_wrapped(FILE *fp, unsigned int *linenum)
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{
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int size = 256;
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int i = 0;
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char *buf = malloc(size);
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for(;;) {
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int ch = getc_unlocked(fp);
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switch(ch) {
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case EOF:
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if (i == 0) {
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free(buf);
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return NULL;
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}
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/* else fall through */
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case '\n':
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if (linenum)
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(*linenum)++;
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if (i == size)
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buf = realloc(buf, size + 1);
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buf[i] = '\0';
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return buf;
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case '\\':
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ch = getc_unlocked(fp);
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if (ch == '\n') {
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if (linenum)
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(*linenum)++;
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continue;
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}
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/* else fall through */
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default:
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buf[i++] = ch;
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if (i == size) {
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size *= 2;
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buf = realloc(buf, size);
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}
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}
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}
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}
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/*
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* Replace dashes with underscores.
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* Dashes inside character range patterns (e.g. [0-9]) are left unchanged.
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*/
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char *underscores(struct kmod_ctx *ctx, char *s)
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{
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unsigned int i;
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if (!s)
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return NULL;
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for (i = 0; s[i]; i++) {
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switch (s[i]) {
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case '-':
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s[i] = '_';
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break;
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case ']':
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INFO(ctx, "Unmatched bracket in %s\n", s);
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break;
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case '[':
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i += strcspn(&s[i], "]");
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if (!s[i])
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INFO(ctx, "Unmatched bracket in %s\n", s);
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break;
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}
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}
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return s;
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}
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bool startswith(const char *s, const char *prefix) {
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size_t sl, pl;
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assert(s);
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assert(prefix);
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sl = strlen(s);
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pl = strlen(prefix);
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if (pl == 0)
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return true;
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if (sl < pl)
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return false;
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return memcmp(s, prefix, pl) == 0;
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}
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inline void *memdup(const void *p, size_t n)
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{
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void *r = malloc(n);
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if (r == NULL)
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return NULL;
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return memcpy(r, p, n);
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}
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