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authorFilipe Brandenburger <filbranden@google.com>2015-11-05 21:51:24 -0800
committerFilipe Brandenburger <filbranden@google.com>2015-11-05 21:51:24 -0800
commit27fc921b658adc5baa988c4c213888b016a60b18 (patch)
tree426b33d9cad99e3f33104b5a5e1d6bffaf3ef446 /src
parent93de9eb76d628cf731120d97332e03600c167271 (diff)
extract-word: Do not re-evaluate the state on each parsed character
Use inner loops to keep processing the same state, except when there is a state change, then break back to the outer loop so that the correct branch can be selected again. Tested that no regressions were introduced in test-extract-word.
Diffstat (limited to 'src')
-rw-r--r--src/basic/extract-word.c75
1 files changed, 43 insertions, 32 deletions
diff --git a/src/basic/extract-word.c b/src/basic/extract-word.c
index b0056a8485..67511a32e1 100644
--- a/src/basic/extract-word.c
+++ b/src/basic/extract-word.c
@@ -121,45 +121,56 @@ int extract_first_word(const char **p, char **ret, const char *separators, Extra
backslash = false;
} else if (quote) { /* inside either single or double quotes */
- if (c == 0) {
- if (flags & EXTRACT_RELAX)
- goto finish_force_terminate;
- return -EINVAL;
- } else if (c == quote) /* found the end quote */
- quote = 0;
- else if (c == '\\')
- backslash = true;
- else {
- if (!GREEDY_REALLOC(s, allocated, sz+2))
- return -ENOMEM;
+ for (;; (*p) ++, c = **p) {
+ if (c == 0) {
+ if (flags & EXTRACT_RELAX)
+ goto finish_force_terminate;
+ return -EINVAL;
+ } else if (c == quote) { /* found the end quote */
+ quote = 0;
+ break;
+ } else if (c == '\\') {
+ backslash = true;
+ break;
+ } else {
+ if (!GREEDY_REALLOC(s, allocated, sz+2))
+ return -ENOMEM;
- s[sz++] = c;
+ s[sz++] = c;
+ }
}
} else if (separator) {
- if (c == 0)
- goto finish_force_terminate;
- if (!strchr(separators, c))
- goto finish;
+ for (;; (*p) ++, c = **p) {
+ if (c == 0)
+ goto finish_force_terminate;
+ if (!strchr(separators, c))
+ goto finish;
+ }
} else {
- if (c == 0)
- goto finish_force_terminate;
- else if ((c == '\'' || c == '"') && (flags & EXTRACT_QUOTES))
- quote = c;
- else if (c == '\\')
- backslash = true;
- else if (strchr(separators, c)) {
- if (flags & EXTRACT_DONT_COALESCE_SEPARATORS) {
- (*p) ++;
- goto finish_force_next;
- }
- separator = true;
- } else {
- if (!GREEDY_REALLOC(s, allocated, sz+2))
- return -ENOMEM;
+ for (;; (*p) ++, c = **p) {
+ if (c == 0)
+ goto finish_force_terminate;
+ else if ((c == '\'' || c == '"') && (flags & EXTRACT_QUOTES)) {
+ quote = c;
+ break;
+ } else if (c == '\\') {
+ backslash = true;
+ break;
+ } else if (strchr(separators, c)) {
+ if (flags & EXTRACT_DONT_COALESCE_SEPARATORS) {
+ (*p) ++;
+ goto finish_force_next;
+ }
+ separator = true;
+ break;
+ } else {
+ if (!GREEDY_REALLOC(s, allocated, sz+2))
+ return -ENOMEM;
- s[sz++] = c;
+ s[sz++] = c;
+ }
}
}
}