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strv: introduce 'relax' mode to strv_split_full()

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If SPLIT_RELAX is specified, then it accepts unfinished quotes or
missing separator after right quote.
This commit is contained in:
Yu Watanabe
2018-09-26 22:48:17 +09:00
parent 2c3a11d86e
commit 8059aa9c92
4 changed files with 24 additions and 14 deletions
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src/basic/string-util.c
+8 -4
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@@ -128,7 +128,7 @@ static size_t strcspn_escaped(const char *s, const char *reject) {
}
/* Split a string into words. */
const char* split(const char **state, size_t *l, const char *separator, bool quoted) {
const char* split(const char **state, size_t *l, const char *separator, SplitFlags flags) {
const char *current;
current = *state;
@@ -144,20 +144,24 @@ const char* split(const char **state, size_t *l, const char *separator, bool quo
return NULL;
}
if (quoted && strchr("\'\"", *current)) {
if (flags & SPLIT_QUOTES && strchr("\'\"", *current)) {
char quotechars[2] = {*current, '\0'};
*l = strcspn_escaped(current + 1, quotechars);
if (current[*l + 1] == '\0' || current[*l + 1] != quotechars[0] ||
(current[*l + 2] && !strchr(separator, current[*l + 2]))) {
/* right quote missing or garbage at the end */
if (flags & SPLIT_RELAX) {
*state = current + *l + 1 + (current[*l + 1] != '\0');
return current + 1;
}
*state = current;
return NULL;
}
*state = current++ + *l + 2;
} else if (quoted) {
} else if (flags & SPLIT_QUOTES) {
*l = strcspn_escaped(current, separator);
if (current[*l] && !strchr(separator, current[*l])) {
if (current[*l] && !strchr(separator, current[*l]) && !(flags & SPLIT_RELAX)) {
/* unfinished escape */
*state = current;
return NULL;