281 lines
8.3 KiB
C
281 lines
8.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <stdbool.h>
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#include <stddef.h>
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#include <string.h>
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#include "alloc-util.h"
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#include "macro.h"
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/* What is interpreted as whitespace? */
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#define WHITESPACE " \t\n\r"
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#define NEWLINE "\n\r"
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#define QUOTES "\"\'"
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#define COMMENTS "#;"
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#define GLOB_CHARS "*?["
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#define DIGITS "0123456789"
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#define LOWERCASE_LETTERS "abcdefghijklmnopqrstuvwxyz"
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#define UPPERCASE_LETTERS "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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#define LETTERS LOWERCASE_LETTERS UPPERCASE_LETTERS
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#define ALPHANUMERICAL LETTERS DIGITS
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#define HEXDIGITS DIGITS "abcdefABCDEF"
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#define streq(a,b) (strcmp((a),(b)) == 0)
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#define strneq(a, b, n) (strncmp((a), (b), (n)) == 0)
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#define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)
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#define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
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int strcmp_ptr(const char *a, const char *b) _pure_;
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int strcasecmp_ptr(const char *a, const char *b) _pure_;
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static inline bool streq_ptr(const char *a, const char *b) {
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return strcmp_ptr(a, b) == 0;
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}
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static inline char* strstr_ptr(const char *haystack, const char *needle) {
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if (!haystack || !needle)
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return NULL;
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return strstr(haystack, needle);
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}
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static inline const char* strempty(const char *s) {
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return s ?: "";
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}
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static inline const char* strnull(const char *s) {
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return s ?: "(null)";
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}
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static inline const char *strna(const char *s) {
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return s ?: "n/a";
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}
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static inline const char* yes_no(bool b) {
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return b ? "yes" : "no";
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}
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static inline const char* true_false(bool b) {
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return b ? "true" : "false";
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}
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static inline const char* plus_minus(bool b) {
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return b ? "+" : "-";
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}
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static inline const char* one_zero(bool b) {
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return b ? "1" : "0";
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}
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static inline const char* enable_disable(bool b) {
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return b ? "enable" : "disable";
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}
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static inline bool isempty(const char *p) {
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return !p || !p[0];
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}
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static inline const char *empty_to_null(const char *p) {
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return isempty(p) ? NULL : p;
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}
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static inline const char *empty_to_dash(const char *str) {
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return isempty(str) ? "-" : str;
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}
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static inline bool empty_or_dash(const char *str) {
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return !str ||
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str[0] == 0 ||
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(str[0] == '-' && str[1] == 0);
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}
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static inline const char *empty_or_dash_to_null(const char *p) {
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return empty_or_dash(p) ? NULL : p;
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}
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static inline char *startswith(const char *s, const char *prefix) {
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size_t l;
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l = strlen(prefix);
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if (strncmp(s, prefix, l) == 0)
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return (char*) s + l;
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return NULL;
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}
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static inline char *startswith_no_case(const char *s, const char *prefix) {
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size_t l;
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l = strlen(prefix);
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if (strncasecmp(s, prefix, l) == 0)
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return (char*) s + l;
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return NULL;
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}
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char *endswith(const char *s, const char *postfix) _pure_;
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char *endswith_no_case(const char *s, const char *postfix) _pure_;
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char *first_word(const char *s, const char *word) _pure_;
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char *strnappend(const char *s, const char *suffix, size_t length);
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char *strjoin_real(const char *x, ...) _sentinel_;
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#define strjoin(a, ...) strjoin_real((a), __VA_ARGS__, NULL)
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#define strjoina(a, ...) \
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({ \
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const char *_appendees_[] = { a, __VA_ARGS__ }; \
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char *_d_, *_p_; \
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size_t _len_ = 0; \
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size_t _i_; \
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for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
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_len_ += strlen(_appendees_[_i_]); \
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_p_ = _d_ = newa(char, _len_ + 1); \
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for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
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_p_ = stpcpy(_p_, _appendees_[_i_]); \
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*_p_ = 0; \
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_d_; \
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})
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char *strstrip(char *s);
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char *delete_chars(char *s, const char *bad);
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char *delete_trailing_chars(char *s, const char *bad);
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char *truncate_nl(char *s);
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static inline char *skip_leading_chars(const char *s, const char *bad) {
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if (!s)
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return NULL;
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if (!bad)
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bad = WHITESPACE;
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return (char*) s + strspn(s, bad);
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}
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char ascii_tolower(char x);
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char *ascii_strlower(char *s);
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char *ascii_strlower_n(char *s, size_t n);
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char ascii_toupper(char x);
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char *ascii_strupper(char *s);
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int ascii_strcasecmp_n(const char *a, const char *b, size_t n);
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int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m);
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bool chars_intersect(const char *a, const char *b) _pure_;
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static inline bool _pure_ in_charset(const char *s, const char* charset) {
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assert(s);
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assert(charset);
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return s[strspn(s, charset)] == '\0';
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}
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bool string_has_cc(const char *p, const char *ok) _pure_;
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char *ellipsize_mem(const char *s, size_t old_length_bytes, size_t new_length_columns, unsigned percent);
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static inline char *ellipsize(const char *s, size_t length, unsigned percent) {
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return ellipsize_mem(s, strlen(s), length, percent);
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}
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char *cellescape(char *buf, size_t len, const char *s);
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/* This limit is arbitrary, enough to give some idea what the string contains */
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#define CELLESCAPE_DEFAULT_LENGTH 64
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char* strshorten(char *s, size_t l);
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char *strreplace(const char *text, const char *old_string, const char *new_string);
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char *strip_tab_ansi(char **ibuf, size_t *_isz, size_t highlight[2]);
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char *strextend_with_separator_internal(char **x, const char *separator, ...) _sentinel_;
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#define strextend_with_separator(x, separator, ...) strextend_with_separator_internal(x, separator, __VA_ARGS__, NULL)
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#define strextend(x, ...) strextend_with_separator_internal(x, NULL, __VA_ARGS__, NULL)
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char *strrep(const char *s, unsigned n);
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int split_pair(const char *s, const char *sep, char **l, char **r);
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int free_and_strdup(char **p, const char *s);
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static inline int free_and_strdup_warn(char **p, const char *s) {
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if (free_and_strdup(p, s) < 0)
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return log_oom();
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return 0;
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}
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int free_and_strndup(char **p, const char *s, size_t l);
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bool string_is_safe(const char *p) _pure_;
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static inline size_t strlen_ptr(const char *s) {
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if (!s)
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return 0;
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return strlen(s);
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}
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DISABLE_WARNING_STRINGOP_TRUNCATION;
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static inline void strncpy_exact(char *buf, const char *src, size_t buf_len) {
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strncpy(buf, src, buf_len);
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}
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REENABLE_WARNING;
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/* Like startswith(), but operates on arbitrary memory blocks */
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static inline void *memory_startswith(const void *p, size_t sz, const char *token) {
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assert(token);
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size_t n = strlen(token);
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if (sz < n)
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return NULL;
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assert(p);
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if (memcmp(p, token, n) != 0)
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return NULL;
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return (uint8_t*) p + n;
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}
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/* Like startswith_no_case(), but operates on arbitrary memory blocks.
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* It works only for ASCII strings.
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*/
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static inline void *memory_startswith_no_case(const void *p, size_t sz, const char *token) {
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assert(token);
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size_t n = strlen(token);
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if (sz < n)
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return NULL;
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assert(p);
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for (size_t i = 0; i < n; i++)
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if (ascii_tolower(((char *)p)[i]) != ascii_tolower(token[i]))
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return NULL;
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return (uint8_t*) p + n;
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}
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static inline char* str_realloc(char **p) {
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/* Reallocate *p to actual size */
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if (!*p)
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return NULL;
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char *t = realloc(*p, strlen(*p) + 1);
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if (!t)
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return NULL;
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return (*p = t);
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}
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char* string_erase(char *x);
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int string_truncate_lines(const char *s, size_t n_lines, char **ret);
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int string_extract_line(const char *s, size_t i, char **ret);
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int string_contains_word_strv(const char *string, const char *separators, char **words, const char **ret_word);
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static inline int string_contains_word(const char *string, const char *separators, const char *word) {
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return string_contains_word_strv(string, separators, STRV_MAKE(word), NULL);
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}
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