mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 08:25:20 +09:00
1115 lines
28 KiB
C
1115 lines
28 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <errno.h>
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#include <fnmatch.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "alloc-util.h"
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#include "env-util.h"
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#include "escape.h"
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#include "extract-word.h"
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#include "fileio.h"
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#include "gunicode.h"
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#include "memory-util.h"
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#include "nulstr-util.h"
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#include "sort-util.h"
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#include "string-util.h"
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#include "strv.h"
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#include "utf8.h"
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char* strv_find(char * const *l, const char *name) {
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assert(name);
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STRV_FOREACH(i, l)
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if (streq(*i, name))
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return *i;
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return NULL;
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}
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char* strv_find_case(char * const *l, const char *name) {
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assert(name);
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STRV_FOREACH(i, l)
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if (strcaseeq(*i, name))
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return *i;
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return NULL;
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}
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char* strv_find_prefix(char * const *l, const char *name) {
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assert(name);
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STRV_FOREACH(i, l)
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if (startswith(*i, name))
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return *i;
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return NULL;
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}
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char* strv_find_startswith(char * const *l, const char *name) {
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assert(name);
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/* Like strv_find_prefix, but actually returns only the
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* suffix, not the whole item */
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STRV_FOREACH(i, l) {
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char *e;
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e = startswith(*i, name);
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if (e)
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return e;
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}
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return NULL;
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}
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char* strv_find_closest_by_levenshtein(char * const *l, const char *name) {
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ssize_t best_distance = SSIZE_MAX;
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char *best = NULL;
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assert(name);
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STRV_FOREACH(i, l) {
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ssize_t distance;
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distance = strlevenshtein(*i, name);
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if (distance < 0) {
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log_debug_errno(distance, "Failed to determine Levenshtein distance between %s and %s: %m", *i, name);
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return NULL;
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}
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if (distance > 5) /* If the distance is just too far off, don't make a bad suggestion */
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continue;
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if (distance < best_distance) {
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best_distance = distance;
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best = *i;
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}
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}
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return best;
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}
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char* strv_find_first_field(char * const *needles, char * const *haystack) {
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STRV_FOREACH(k, needles) {
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char *value = strv_env_pairs_get((char **)haystack, *k);
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if (value)
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return value;
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}
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return NULL;
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}
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char** strv_free(char **l) {
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STRV_FOREACH(k, l)
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free(*k);
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return mfree(l);
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}
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char** strv_free_erase(char **l) {
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STRV_FOREACH(i, l)
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erase_and_freep(i);
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return mfree(l);
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}
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void strv_free_many(char ***strvs, size_t n) {
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assert(strvs || n == 0);
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FOREACH_ARRAY (i, strvs, n)
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strv_free(*i);
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free(strvs);
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}
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char** strv_copy_n(char * const *l, size_t m) {
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_cleanup_strv_free_ char **result = NULL;
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char **k;
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result = new(char*, MIN(strv_length(l), m) + 1);
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if (!result)
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return NULL;
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k = result;
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STRV_FOREACH(i, l) {
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if (m == 0)
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break;
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*k = strdup(*i);
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if (!*k)
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return NULL;
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k++;
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if (m != SIZE_MAX)
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m--;
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}
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*k = NULL;
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return TAKE_PTR(result);
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}
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int strv_copy_unless_empty(char * const *l, char ***ret) {
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assert(ret);
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if (strv_isempty(l)) {
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*ret = NULL;
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return 0;
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}
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char **copy = strv_copy(l);
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if (!copy)
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return -ENOMEM;
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*ret = TAKE_PTR(copy);
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return 1;
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}
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size_t strv_length(char * const *l) {
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size_t n = 0;
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STRV_FOREACH(i, l)
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n++;
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return n;
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}
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char** strv_new_ap(const char *x, va_list ap) {
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_cleanup_strv_free_ char **a = NULL;
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size_t n = 0, i = 0;
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va_list aq;
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/* As a special trick we ignore all listed strings that equal
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* STRV_IGNORE. This is supposed to be used with the
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* STRV_IFNOTNULL() macro to include possibly NULL strings in
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* the string list. */
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va_copy(aq, ap);
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for (const char *s = x; s; s = va_arg(aq, const char*)) {
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if (s == STRV_IGNORE)
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continue;
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n++;
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}
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va_end(aq);
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a = new(char*, n+1);
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if (!a)
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return NULL;
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for (const char *s = x; s; s = va_arg(ap, const char*)) {
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if (s == STRV_IGNORE)
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continue;
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a[i] = strdup(s);
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if (!a[i])
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return NULL;
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i++;
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}
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a[i] = NULL;
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return TAKE_PTR(a);
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}
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char** strv_new_internal(const char *x, ...) {
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char **r;
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va_list ap;
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va_start(ap, x);
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r = strv_new_ap(x, ap);
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va_end(ap);
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return r;
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}
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int strv_extend_strv(char ***a, char * const *b, bool filter_duplicates) {
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size_t p, q, i = 0;
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char **t;
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assert(a);
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if (strv_isempty(b))
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return 0;
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p = strv_length(*a);
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q = strv_length(b);
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if (p >= SIZE_MAX - q)
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return -ENOMEM;
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t = reallocarray(*a, GREEDY_ALLOC_ROUND_UP(p + q + 1), sizeof(char *));
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if (!t)
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return -ENOMEM;
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t[p] = NULL;
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*a = t;
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STRV_FOREACH(s, b) {
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if (filter_duplicates && strv_contains(t, *s))
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continue;
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t[p+i] = strdup(*s);
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if (!t[p+i])
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goto rollback;
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i++;
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t[p+i] = NULL;
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}
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assert(i <= q);
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return (int) i;
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rollback:
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free_many_charp(t + p, i);
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t[p] = NULL;
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return -ENOMEM;
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}
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int strv_extend_strv_biconcat(char ***a, const char *prefix, const char* const *b, const char *suffix) {
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int r;
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STRV_FOREACH(s, b) {
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char *v;
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v = strjoin(strempty(prefix), *s, suffix);
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if (!v)
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return -ENOMEM;
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r = strv_consume(a, v);
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if (r < 0)
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return r;
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}
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return 0;
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}
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int strv_split_newlines_full(char ***ret, const char *s, ExtractFlags flags) {
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_cleanup_strv_free_ char **l = NULL;
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size_t n;
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int r;
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assert(s);
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/* Special version of strv_split_full() that splits on newlines and
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* suppresses an empty string at the end. */
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r = strv_split_full(&l, s, NEWLINE, flags);
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if (r < 0)
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return r;
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n = strv_length(l);
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if (n > 0 && isempty(l[n - 1])) {
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l[n - 1] = mfree(l[n - 1]);
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n--;
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}
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*ret = TAKE_PTR(l);
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return n;
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}
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int strv_split_full(char ***t, const char *s, const char *separators, ExtractFlags flags) {
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_cleanup_strv_free_ char **l = NULL;
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size_t n = 0;
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int r;
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assert(t);
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assert(s);
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for (;;) {
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_cleanup_free_ char *word = NULL;
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r = extract_first_word(&s, &word, separators, flags);
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if (r < 0)
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return r;
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if (r == 0)
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break;
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if (!GREEDY_REALLOC(l, n + 2))
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return -ENOMEM;
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l[n++] = TAKE_PTR(word);
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l[n] = NULL;
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}
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if (!l) {
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l = new0(char*, 1);
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if (!l)
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return -ENOMEM;
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}
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*t = TAKE_PTR(l);
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return (int) n;
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}
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int strv_split_and_extend_full(char ***t, const char *s, const char *separators, bool filter_duplicates, ExtractFlags flags) {
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_cleanup_strv_free_ char **l = NULL;
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int r;
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assert(t);
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assert(s);
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r = strv_split_full(&l, s, separators, flags);
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if (r < 0)
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return r;
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r = strv_extend_strv(t, l, filter_duplicates);
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if (r < 0)
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return r;
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return (int) strv_length(*t);
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}
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int strv_split_colon_pairs(char ***t, const char *s) {
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_cleanup_strv_free_ char **l = NULL;
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size_t n = 0;
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int r;
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assert(t);
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assert(s);
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for (;;) {
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_cleanup_free_ char *first = NULL, *second = NULL, *tuple = NULL, *second_or_empty = NULL;
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r = extract_first_word(&s, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
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if (r < 0)
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return r;
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if (r == 0)
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break;
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const char *p = tuple;
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r = extract_many_words(&p, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS,
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&first, &second);
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if (r < 0)
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return r;
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if (r == 0)
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continue;
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/* Enforce that at most 2 colon-separated words are contained in each group */
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if (!isempty(p))
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return -EINVAL;
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second_or_empty = strdup(strempty(second));
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if (!second_or_empty)
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return -ENOMEM;
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if (!GREEDY_REALLOC(l, n + 3))
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return -ENOMEM;
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l[n++] = TAKE_PTR(first);
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l[n++] = TAKE_PTR(second_or_empty);
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l[n] = NULL;
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}
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if (!l) {
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l = new0(char*, 1);
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if (!l)
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return -ENOMEM;
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}
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*t = TAKE_PTR(l);
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return (int) n;
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}
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char* strv_join_full(char * const *l, const char *separator, const char *prefix, bool escape_separator) {
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char *r, *e;
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size_t n, k, m;
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if (!separator)
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separator = " ";
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k = strlen(separator);
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m = strlen_ptr(prefix);
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if (escape_separator) /* If the separator was multi-char, we wouldn't know how to escape it. */
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assert(k == 1);
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n = 0;
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STRV_FOREACH(s, l) {
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if (s != l)
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n += k;
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bool needs_escaping = escape_separator && strchr(*s, *separator);
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n += m + strlen(*s) * (1 + needs_escaping);
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}
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r = new(char, n+1);
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if (!r)
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return NULL;
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e = r;
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STRV_FOREACH(s, l) {
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if (s != l)
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e = stpcpy(e, separator);
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if (prefix)
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e = stpcpy(e, prefix);
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bool needs_escaping = escape_separator && strchr(*s, *separator);
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if (needs_escaping)
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for (size_t i = 0; (*s)[i]; i++) {
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if ((*s)[i] == *separator)
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*(e++) = '\\';
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*(e++) = (*s)[i];
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}
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else
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e = stpcpy(e, *s);
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}
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*e = 0;
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return r;
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}
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int strv_push_with_size(char ***l, size_t *n, char *value) {
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/* n is a pointer to a variable to store the size of l.
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* If not given (i.e. n is NULL or *n is SIZE_MAX), size will be calculated using strv_length().
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* If n is not NULL, the size after the push will be returned.
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* If value is empty, no action is taken and *n is not set. */
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if (!value)
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return 0;
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size_t size = n ? *n : SIZE_MAX;
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if (size == SIZE_MAX)
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size = strv_length(*l);
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/* Check for overflow */
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if (size > SIZE_MAX-2)
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return -ENOMEM;
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char **c = reallocarray(*l, GREEDY_ALLOC_ROUND_UP(size + 2), sizeof(char*));
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if (!c)
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return -ENOMEM;
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c[size] = value;
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c[size+1] = NULL;
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*l = c;
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if (n)
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*n = size + 1;
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return 0;
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}
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int strv_push_pair(char ***l, char *a, char *b) {
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char **c;
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size_t n;
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if (!a && !b)
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return 0;
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n = strv_length(*l);
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/* Check for overflow */
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if (n > SIZE_MAX-3)
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return -ENOMEM;
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/* increase and check for overflow */
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c = reallocarray(*l, GREEDY_ALLOC_ROUND_UP(n + !!a + !!b + 1), sizeof(char*));
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if (!c)
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return -ENOMEM;
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if (a)
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c[n++] = a;
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if (b)
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c[n++] = b;
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c[n] = NULL;
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*l = c;
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return 0;
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}
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int strv_insert(char ***l, size_t position, char *value) {
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char **c;
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size_t n, m;
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assert(l);
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if (!value)
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return 0;
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n = strv_length(*l);
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position = MIN(position, n);
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/* check for overflow and increase*/
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if (n > SIZE_MAX - 2)
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return -ENOMEM;
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m = n + 2;
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c = reallocarray(*l, GREEDY_ALLOC_ROUND_UP(m), sizeof(char*));
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if (!c)
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return -ENOMEM;
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if (n > position)
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memmove(c + position + 1, c + position, (n - position) * sizeof(char*));
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c[position] = value;
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c[n + 1] = NULL;
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*l = c;
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return 0;
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}
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int strv_consume_with_size(char ***l, size_t *n, char *value) {
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int r;
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r = strv_push_with_size(l, n, value);
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if (r < 0)
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free(value);
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return r;
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}
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int strv_consume_pair(char ***l, char *a, char *b) {
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int r;
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r = strv_push_pair(l, a, b);
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if (r < 0) {
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free(a);
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free(b);
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}
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return r;
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}
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int strv_consume_prepend(char ***l, char *value) {
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int r;
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|
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r = strv_push_prepend(l, value);
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if (r < 0)
|
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free(value);
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|
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return r;
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}
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|
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int strv_prepend(char ***l, const char *value) {
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char *v;
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|
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if (!value)
|
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return 0;
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|
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v = strdup(value);
|
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if (!v)
|
|
return -ENOMEM;
|
|
|
|
return strv_consume_prepend(l, v);
|
|
}
|
|
|
|
int strv_extend_with_size(char ***l, size_t *n, const char *value) {
|
|
char *v;
|
|
|
|
if (!value)
|
|
return 0;
|
|
|
|
v = strdup(value);
|
|
if (!v)
|
|
return -ENOMEM;
|
|
|
|
return strv_consume_with_size(l, n, v);
|
|
}
|
|
|
|
int strv_extend_many_internal(char ***l, const char *value, ...) {
|
|
va_list ap;
|
|
size_t n, m;
|
|
int r;
|
|
|
|
assert(l);
|
|
|
|
m = n = strv_length(*l);
|
|
|
|
r = 0;
|
|
va_start(ap, value);
|
|
for (const char *s = value; s != POINTER_MAX; s = va_arg(ap, const char*)) {
|
|
if (!s)
|
|
continue;
|
|
|
|
if (m > SIZE_MAX-1) { /* overflow */
|
|
r = -ENOMEM;
|
|
break;
|
|
}
|
|
m++;
|
|
}
|
|
va_end(ap);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
if (m > SIZE_MAX-1)
|
|
return -ENOMEM;
|
|
|
|
char **c = reallocarray(*l, GREEDY_ALLOC_ROUND_UP(m+1), sizeof(char*));
|
|
if (!c)
|
|
return -ENOMEM;
|
|
*l = c;
|
|
|
|
r = 0;
|
|
size_t i = n;
|
|
va_start(ap, value);
|
|
for (const char *s = value; s != POINTER_MAX; s = va_arg(ap, const char*)) {
|
|
if (!s)
|
|
continue;
|
|
|
|
c[i] = strdup(s);
|
|
if (!c[i]) {
|
|
r = -ENOMEM;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
va_end(ap);
|
|
|
|
if (r < 0) {
|
|
/* rollback on error */
|
|
for (size_t j = n; j < i; j++)
|
|
c[j] = mfree(c[j]);
|
|
return r;
|
|
}
|
|
|
|
c[i] = NULL;
|
|
return 0;
|
|
}
|
|
|
|
char** strv_uniq(char **l) {
|
|
/* Drops duplicate entries. The first identical string will be
|
|
* kept, the others dropped */
|
|
|
|
STRV_FOREACH(i, l)
|
|
strv_remove(i+1, *i);
|
|
|
|
return l;
|
|
}
|
|
|
|
bool strv_is_uniq(char * const *l) {
|
|
STRV_FOREACH(i, l)
|
|
if (strv_contains(i+1, *i))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
char** strv_remove(char **l, const char *s) {
|
|
char **f, **t;
|
|
|
|
if (!l)
|
|
return NULL;
|
|
|
|
assert(s);
|
|
|
|
/* Drops every occurrence of s in the string list, edits
|
|
* in-place. */
|
|
|
|
for (f = t = l; *f; f++)
|
|
if (streq(*f, s))
|
|
free(*f);
|
|
else
|
|
*(t++) = *f;
|
|
|
|
*t = NULL;
|
|
return l;
|
|
}
|
|
|
|
bool strv_overlap(char * const *a, char * const *b) {
|
|
STRV_FOREACH(i, a)
|
|
if (strv_contains(b, *i))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static int str_compare(char * const *a, char * const *b) {
|
|
return strcmp(*a, *b);
|
|
}
|
|
|
|
char** strv_sort(char **l) {
|
|
typesafe_qsort(l, strv_length(l), str_compare);
|
|
return l;
|
|
}
|
|
|
|
char** strv_sort_uniq(char **l) {
|
|
if (strv_isempty(l))
|
|
return l;
|
|
|
|
char **tail = strv_sort(l), *prev = NULL;
|
|
STRV_FOREACH(i, l)
|
|
if (streq_ptr(*i, prev))
|
|
free(*i);
|
|
else
|
|
*(tail++) = prev = *i;
|
|
|
|
*tail = NULL;
|
|
return l;
|
|
}
|
|
|
|
int strv_compare(char * const *a, char * const *b) {
|
|
int r;
|
|
|
|
if (strv_isempty(a)) {
|
|
if (strv_isempty(b))
|
|
return 0;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
if (strv_isempty(b))
|
|
return 1;
|
|
|
|
for ( ; *a || *b; ++a, ++b) {
|
|
r = strcmp_ptr(*a, *b);
|
|
if (r != 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void strv_print_full(char * const *l, const char *prefix) {
|
|
STRV_FOREACH(s, l)
|
|
printf("%s%s\n", strempty(prefix), *s);
|
|
}
|
|
|
|
int strv_extendf(char ***l, const char *format, ...) {
|
|
va_list ap;
|
|
char *x;
|
|
int r;
|
|
|
|
va_start(ap, format);
|
|
r = vasprintf(&x, format, ap);
|
|
va_end(ap);
|
|
|
|
if (r < 0)
|
|
return -ENOMEM;
|
|
|
|
return strv_consume(l, x);
|
|
}
|
|
|
|
char* startswith_strv(const char *s, char * const *l) {
|
|
STRV_FOREACH(i, l) {
|
|
char *found = startswith(s, *i);
|
|
if (found)
|
|
return found;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char* endswith_strv(const char *s, char * const *l) {
|
|
STRV_FOREACH(i, l) {
|
|
char *found = endswith(s, *i);
|
|
if (found)
|
|
return found;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char** strv_reverse(char **l) {
|
|
size_t n;
|
|
|
|
n = strv_length(l);
|
|
if (n <= 1)
|
|
return l;
|
|
|
|
for (size_t i = 0; i < n / 2; i++)
|
|
SWAP_TWO(l[i], l[n-1-i]);
|
|
|
|
return l;
|
|
}
|
|
|
|
char** strv_shell_escape(char **l, const char *bad) {
|
|
/* Escapes every character in every string in l that is in bad,
|
|
* edits in-place, does not roll-back on error. */
|
|
|
|
STRV_FOREACH(s, l) {
|
|
char *v;
|
|
|
|
v = shell_escape(*s, bad);
|
|
if (!v)
|
|
return NULL;
|
|
|
|
free_and_replace(*s, v);
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
bool strv_fnmatch_full(
|
|
char* const* patterns,
|
|
const char *s,
|
|
int flags,
|
|
size_t *ret_matched_pos) {
|
|
|
|
assert(s);
|
|
|
|
if (patterns)
|
|
for (size_t i = 0; patterns[i]; i++)
|
|
/* NB: We treat all fnmatch() errors as equivalent to FNM_NOMATCH, i.e. if fnmatch() fails to
|
|
* process the pattern for some reason we'll consider this equivalent to non-matching. */
|
|
if (fnmatch(patterns[i], s, flags) == 0) {
|
|
if (ret_matched_pos)
|
|
*ret_matched_pos = i;
|
|
return true;
|
|
}
|
|
|
|
if (ret_matched_pos)
|
|
*ret_matched_pos = SIZE_MAX;
|
|
|
|
return false;
|
|
}
|
|
|
|
char** strv_skip(char **l, size_t n) {
|
|
|
|
while (n > 0) {
|
|
if (strv_isempty(l))
|
|
return l;
|
|
|
|
l++, n--;
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
int strv_extend_n(char ***l, const char *value, size_t n) {
|
|
size_t i, k;
|
|
char **nl;
|
|
|
|
assert(l);
|
|
|
|
if (!value)
|
|
return 0;
|
|
if (n == 0)
|
|
return 0;
|
|
|
|
/* Adds the value n times to l */
|
|
|
|
k = strv_length(*l);
|
|
if (n >= SIZE_MAX - k)
|
|
return -ENOMEM;
|
|
|
|
nl = reallocarray(*l, GREEDY_ALLOC_ROUND_UP(k + n + 1), sizeof(char *));
|
|
if (!nl)
|
|
return -ENOMEM;
|
|
|
|
*l = nl;
|
|
|
|
for (i = k; i < k + n; i++) {
|
|
nl[i] = strdup(value);
|
|
if (!nl[i])
|
|
goto rollback;
|
|
}
|
|
nl[i] = NULL;
|
|
|
|
return 0;
|
|
|
|
rollback:
|
|
for (size_t j = k; j < i; j++)
|
|
free(nl[j]);
|
|
nl[k] = NULL;
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int strv_extend_assignment(char ***l, const char *lhs, const char *rhs) {
|
|
char *j;
|
|
|
|
assert(l);
|
|
assert(lhs);
|
|
|
|
if (!rhs) /* value is optional, in which case we suppress the field */
|
|
return 0;
|
|
|
|
j = strjoin(lhs, "=", rhs);
|
|
if (!j)
|
|
return -ENOMEM;
|
|
|
|
return strv_consume(l, j);
|
|
}
|
|
|
|
int fputstrv(FILE *f, char * const *l, const char *separator, bool *space) {
|
|
bool b = false;
|
|
int r;
|
|
|
|
assert(f);
|
|
|
|
/* Like fputs(), but for strv, and with a less stupid argument order */
|
|
|
|
if (!space)
|
|
space = &b;
|
|
|
|
STRV_FOREACH(s, l) {
|
|
r = fputs_with_separator(f, *s, separator, space);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_PRIVATE_HASH_OPS_FULL(string_strv_hash_ops, char, string_hash_func, string_compare_func, free, char*, strv_free);
|
|
|
|
static int string_strv_hashmap_put_internal(Hashmap *h, const char *key, const char *value) {
|
|
char **l;
|
|
int r;
|
|
|
|
assert(h);
|
|
assert(key);
|
|
assert(value);
|
|
|
|
l = hashmap_get(h, key);
|
|
if (l) {
|
|
/* A list for this key already exists, let's append to it if it is not listed yet */
|
|
if (strv_contains(l, value))
|
|
return 0;
|
|
|
|
r = strv_extend(&l, value);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
assert_se(hashmap_update(h, key, l) >= 0);
|
|
} else {
|
|
/* No list for this key exists yet, create one */
|
|
_cleanup_strv_free_ char **l2 = NULL;
|
|
_cleanup_free_ char *t = NULL;
|
|
|
|
t = strdup(key);
|
|
if (!t)
|
|
return -ENOMEM;
|
|
|
|
r = strv_extend(&l2, value);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = hashmap_put(h, t, l2);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
TAKE_PTR(t);
|
|
TAKE_PTR(l2);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int _string_strv_hashmap_put(Hashmap **h, const char *key, const char *value HASHMAP_DEBUG_PARAMS) {
|
|
int r;
|
|
|
|
assert(h);
|
|
assert(key);
|
|
assert(value);
|
|
|
|
r = _hashmap_ensure_allocated(h, &string_strv_hash_ops HASHMAP_DEBUG_PASS_ARGS);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return string_strv_hashmap_put_internal(*h, key, value);
|
|
}
|
|
|
|
int _string_strv_ordered_hashmap_put(OrderedHashmap **h, const char *key, const char *value HASHMAP_DEBUG_PARAMS) {
|
|
int r;
|
|
|
|
assert(h);
|
|
assert(key);
|
|
assert(value);
|
|
|
|
r = _ordered_hashmap_ensure_allocated(h, &string_strv_hash_ops HASHMAP_DEBUG_PASS_ARGS);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return string_strv_hashmap_put_internal(PLAIN_HASHMAP(*h), key, value);
|
|
}
|
|
|
|
int strv_rebreak_lines(char **l, size_t width, char ***ret) {
|
|
_cleanup_strv_free_ char **broken = NULL;
|
|
int r;
|
|
|
|
assert(ret);
|
|
|
|
/* Implements a simple UTF-8 line breaking algorithm
|
|
*
|
|
* Goes through all entries in *l, and line-breaks each line that is longer than the specified
|
|
* character width. Breaks at the end of words/beginning of whitespace. Lines that do not contain whitespace are not
|
|
* broken. Retains whitespace at beginning of lines, removes it at end of lines. */
|
|
|
|
if (width == SIZE_MAX) { /* NOP? */
|
|
broken = strv_copy(l);
|
|
if (!broken)
|
|
return -ENOMEM;
|
|
|
|
*ret = TAKE_PTR(broken);
|
|
return 0;
|
|
}
|
|
|
|
STRV_FOREACH(i, l) {
|
|
const char *start = *i, *whitespace_begin = NULL, *whitespace_end = NULL;
|
|
bool in_prefix = true; /* still in the whitespace in the beginning of the line? */
|
|
size_t w = 0;
|
|
|
|
for (const char *p = start; *p != 0; p = utf8_next_char(p)) {
|
|
if (strchr(NEWLINE, *p)) {
|
|
in_prefix = true;
|
|
whitespace_begin = whitespace_end = NULL;
|
|
w = 0;
|
|
} else if (strchr(WHITESPACE, *p)) {
|
|
if (!in_prefix && (!whitespace_begin || whitespace_end)) {
|
|
whitespace_begin = p;
|
|
whitespace_end = NULL;
|
|
}
|
|
} else {
|
|
if (whitespace_begin && !whitespace_end)
|
|
whitespace_end = p;
|
|
|
|
in_prefix = false;
|
|
}
|
|
|
|
int cw = utf8_char_console_width(p);
|
|
if (cw < 0) {
|
|
log_debug_errno(cw, "Comment to line break contains invalid UTF-8, ignoring.");
|
|
cw = 1;
|
|
}
|
|
|
|
w += cw;
|
|
|
|
if (w > width && whitespace_begin && whitespace_end) {
|
|
_cleanup_free_ char *truncated = NULL;
|
|
|
|
truncated = strndup(start, whitespace_begin - start);
|
|
if (!truncated)
|
|
return -ENOMEM;
|
|
|
|
r = strv_consume(&broken, TAKE_PTR(truncated));
|
|
if (r < 0)
|
|
return r;
|
|
|
|
p = start = whitespace_end;
|
|
whitespace_begin = whitespace_end = NULL;
|
|
w = cw;
|
|
}
|
|
}
|
|
|
|
/* Process rest of the line */
|
|
assert(start);
|
|
if (in_prefix) /* Never seen anything non-whitespace? Generate empty line! */
|
|
r = strv_extend(&broken, "");
|
|
else if (whitespace_begin && !whitespace_end) { /* Ends in whitespace? Chop it off! */
|
|
_cleanup_free_ char *truncated = strndup(start, whitespace_begin - start);
|
|
if (!truncated)
|
|
return -ENOMEM;
|
|
|
|
r = strv_consume(&broken, TAKE_PTR(truncated));
|
|
} else /* Otherwise use line as is */
|
|
r = strv_extend(&broken, start);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
*ret = TAKE_PTR(broken);
|
|
return 0;
|
|
}
|