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Commit | Line | Data |
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cb698658 | 1 | /* |
2 | * lxc: linux Container library | |
3 | * | |
4 | * (C) Copyright IBM Corp. 2007, 2008 | |
5 | * | |
6 | * Authors: | |
9afe19d6 | 7 | * Daniel Lezcano <daniel.lezcano at free.fr> |
cb698658 | 8 | * |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
250b1eec | 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
cb698658 | 22 | */ |
5fa5aa7c | 23 | #define _GNU_SOURCE |
cb698658 | 24 | #include <stdio.h> |
5fa5aa7c CC |
25 | #undef _GNU_SOURCE |
26 | #include <string.h> | |
cb698658 | 27 | #include <stdlib.h> |
28 | #include <errno.h> | |
29 | #include <dirent.h> | |
30 | ||
31 | #include "parse.h" | |
1ba0013f | 32 | #include "config.h" |
6a44839f | 33 | #include "utils.h" |
f2363e38 | 34 | #include "log.h" |
36eb9bde CLG |
35 | |
36 | lxc_log_define(lxc_parse, lxc); | |
cb698658 | 37 | |
2382ecff | 38 | int lxc_file_for_each_line(const char *file, lxc_file_cb callback, void *data) |
cb698658 | 39 | { |
40 | FILE *f; | |
4fcc0112 | 41 | int err = 0; |
2382ecff CC |
42 | char *line = NULL; |
43 | size_t len = 0; | |
cb698658 | 44 | |
45 | f = fopen(file, "r"); | |
46 | if (!f) { | |
36eb9bde | 47 | SYSERROR("failed to open %s", file); |
cb698658 | 48 | return -1; |
49 | } | |
50 | ||
2382ecff CC |
51 | while (getline(&line, &len, f) != -1) { |
52 | err = callback(line, data); | |
48e2f384 | 53 | if (err) { |
8daccdb4 SH |
54 | // callback rv > 0 means stop here |
55 | // callback rv < 0 means error | |
56 | if (err < 0) | |
57 | ERROR("Failed to parse config: %s", line); | |
2382ecff | 58 | break; |
48e2f384 | 59 | } |
cb698658 | 60 | } |
2382ecff | 61 | |
f10fad2f | 62 | free(line); |
cb698658 | 63 | fclose(f); |
64 | return err; | |
65 | } | |
66 | ||
74a3920a | 67 | int lxc_char_left_gc(const char *buffer, size_t len) |
cb698658 | 68 | { |
84760c11 | 69 | size_t i; |
cb698658 | 70 | for (i = 0; i < len; i++) { |
71 | if (buffer[i] == ' ' || | |
72 | buffer[i] == '\t') | |
73 | continue; | |
74 | return i; | |
75 | } | |
76 | return 0; | |
77 | } | |
78 | ||
74a3920a | 79 | int lxc_char_right_gc(const char *buffer, size_t len) |
cb698658 | 80 | { |
81 | int i; | |
82 | for (i = len - 1; i >= 0; i--) { | |
83 | if (buffer[i] == ' ' || | |
84 | buffer[i] == '\t' || | |
85 | buffer[i] == '\n' || | |
86 | buffer[i] == '\0') | |
87 | continue; | |
88 | return i + 1; | |
89 | } | |
90 | return 0; | |
91 | } | |
92 | ||
74a3920a | 93 | int lxc_is_line_empty(const char *line) |
cb698658 | 94 | { |
95 | int i; | |
96 | size_t len = strlen(line); | |
97 | ||
98 | for (i = 0; i < len; i++) | |
99 | if (line[i] != ' ' && line[i] != '\t' && | |
100 | line[i] != '\n' && line[i] != '\r' && | |
101 | line[i] != '\f' && line[i] != '\0') | |
102 | return 0; | |
103 | return 1; | |
104 | } |