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87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* Copyright (C) 2018 - David Oberhollenzer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef UTIL_H
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#define UTIL_H
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#include <sys/types.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "config.h"
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#ifdef __GNUC__
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#define NORETURN __attribute__((noreturn))
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#endif
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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typedef struct {
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const char *name;
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int value;
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} enum_map_t;
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/*
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Read from fd until end-of-file or a line feed is encountered.
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Returns NULL with errno set on failure. Returns NULL with errno
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cleared if end-of-file is reached.
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The line must be deallocated with free().
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*/
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char *rdline(int fd);
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/*
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Split a line of the shape "key = value" into key and value part.
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The key can contain alphanumeric characters and can be padded with
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spaces or tabs.
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The value can be either a sequence of alphanumeric characters, period
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or underscore OR a string in quotation marks. For strings, the
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quotation marks are removed and escape sequences are processed.
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The value may also be padded with spaces or tabs but the line may not
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contain anything else after the value, except for spaces, tabs or
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the '#' symbol which is interpreted as start of a comment.
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*/
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int splitkv(char *line, char **key, char **value);
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/*
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Search through an array of enum_map_t entries to resolve a string to
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a numeric value. The end of the map is indicated by a sentinel entry
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with the name set to NULL.
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*/
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const enum_map_t *enum_by_name(const enum_map_t *map, const char *name);
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/*
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Search through an array of enum_map_t entries to resolve a numeric
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value to a string name. The end of the map is indicated by a sentinel
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entry with the name set to NULL.
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*/
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const char *enum_to_name(const enum_map_t *map, int value);
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/*
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Create a copy of the input string inp, but replace all occourances
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of %<number> with argv[number] if the number is within the bounds
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specified by argc.
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*/
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char *strexpand(const char *inp, size_t argc, const char *const *argv);
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#endif /* UTIL_H */
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