From 9a88f7da453eadc72d8f333700dbd80777feecd1 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Sun, 25 Feb 2018 14:33:19 +0100 Subject: Initial commit Signed-off-by: David Oberhollenzer --- lib/include/util.h | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 lib/include/util.h (limited to 'lib/include/util.h') diff --git a/lib/include/util.h b/lib/include/util.h new file mode 100644 index 0000000..bed2ba7 --- /dev/null +++ b/lib/include/util.h @@ -0,0 +1,58 @@ +#ifndef UTIL_H +#define UTIL_H + +#include +#include +#include + +#include "config.h" + +#ifdef __GNUC__ + #define NORETURN __attribute__((noreturn)) +#endif + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +typedef struct { + const char *name; + int value; +} enum_map_t; + + +/* + Read from fd until end-of-file or a line feed is encountered. + + Returns NULL with errno set on failure. Returns NULL with errno + cleared if end-of-file is reached. + + The line must be deallocated with free(). +*/ +char *rdline(int fd); + +/* + Split a line of the shape "key = value" into key and value part. + + The key can contain alphanumeric characters and can be padded with + spaces or tabs. + + The value can be either a sequence of alphanumeric characters, period + or underscore OR a string in quotation marks. For strings, the + quotation marks are removed and escape sequences are processed. + + The value may also be padded with spaces or tabs but the line may not + contain anything else after the value, except for spaces, tabs or + the '#' symbol which is interpreted as start of a comment. +*/ +int splitkv(char *line, char **key, char **value); + +/* + Search through an array of enum_map_t entries to resolve a string to + a numeric value. The end of the map is indicated by a sentinel entry + with the name set to NULL. +*/ +const enum_map_t *enum_by_name(const enum_map_t *map, const char *name); + +char *strexpand(const char *inp, size_t argc, const char *const *argv); + +#endif /* UTIL_H */ + -- cgit v1.2.3