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124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
/*
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* lxc: linux Container library
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*
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* (C) Copyright IBM Corp. 2007, 2008
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*
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* Authors:
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* Daniel Lezcano <dlezcano at fr.ibm.com>
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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; either
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* version 2.1 of the License, or (at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <dirent.h>
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#include "parse.h"
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#include "lxc_log.h"
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static int dir_filter(const struct dirent *dirent)
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{
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if (!strcmp(dirent->d_name, ".") ||
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!strcmp(dirent->d_name, ".."))
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return 0;
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return 1;
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}
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int lxc_dir_for_each(const char *name, const char *directory,
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lxc_dir_cb callback, void *data)
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{
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struct dirent **namelist;
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int n;
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n = scandir(directory, &namelist, dir_filter, alphasort);
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if (n < 0) {
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lxc_log_syserror("failed to scan %s directory", directory);
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return -1;
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}
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while (n--) {
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if (callback(name, directory, namelist[n]->d_name, data)) {
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lxc_log_error("callback failed");
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free(namelist[n]);
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return -1;
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}
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free(namelist[n]);
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}
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return 0;
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}
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int lxc_file_for_each_line(const char *file, lxc_file_cb callback,
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void *buffer, size_t len, void* data)
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{
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FILE *f;
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int err = -1;
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f = fopen(file, "r");
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if (!f) {
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lxc_log_syserror("failed to open %s", file);
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return -1;
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}
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while (fgets(buffer, len, f)) {
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err = callback(buffer, data);
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if (err)
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goto out;
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}
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out:
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fclose(f);
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return err;
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}
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int lxc_char_left_gc(char *buffer, size_t len)
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{
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int i;
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for (i = 0; i < len; i++) {
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if (buffer[i] == ' ' ||
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buffer[i] == '\t')
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continue;
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return i;
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}
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return 0;
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}
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int lxc_char_right_gc(char *buffer, size_t len)
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{
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int i;
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for (i = len - 1; i >= 0; i--) {
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if (buffer[i] == ' ' ||
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buffer[i] == '\t' ||
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buffer[i] == '\n' ||
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buffer[i] == '\0')
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continue;
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return i + 1;
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}
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return 0;
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}
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int lxc_is_line_empty(char *line)
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{
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int i;
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size_t len = strlen(line);
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for (i = 0; i < len; i++)
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if (line[i] != ' ' && line[i] != '\t' &&
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line[i] != '\n' && line[i] != '\r' &&
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line[i] != '\f' && line[i] != '\0')
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return 0;
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return 1;
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}
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