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util: Refactor common cunescape block in unquote_first_word

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This commit is contained in:
Filipe Brandenburger 2015-05-29 23:42:47 -07:00
parent b3d4ef81f6
commit 05654e712f
1 changed files with 39 additions and 93 deletions
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132
src/basic/util.c
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@ -5209,6 +5209,42 @@ int unquote_first_word(const char **p, char **ret, UnquoteFlags flags) {
break; break;
case SINGLE_QUOTE:
if (c == 0) {
if (flags & UNQUOTE_RELAX)
goto finish;
return -EINVAL;
} else if (c == '\'')
state = VALUE;
else if (c == '\\')
state = SINGLE_QUOTE_ESCAPE;
else {
if (!GREEDY_REALLOC(s, allocated, sz+2))
return -ENOMEM;
s[sz++] = c;
}
break;
case DOUBLE_QUOTE:
if (c == 0)
return -EINVAL;
else if (c == '\"')
state = VALUE;
else if (c == '\\')
state = DOUBLE_QUOTE_ESCAPE;
else {
if (!GREEDY_REALLOC(s, allocated, sz+2))
return -ENOMEM;
s[sz++] = c;
}
break;
case SINGLE_QUOTE_ESCAPE:
case DOUBLE_QUOTE_ESCAPE:
case VALUE_ESCAPE: case VALUE_ESCAPE:
if (c == 0) { if (c == 0) {
if (flags & UNQUOTE_RELAX) if (flags & UNQUOTE_RELAX)
@ -5235,99 +5271,9 @@ int unquote_first_word(const char **p, char **ret, UnquoteFlags flags) {
} else } else
s[sz++] = c; s[sz++] = c;
state = VALUE; state = (state == SINGLE_QUOTE_ESCAPE) ? SINGLE_QUOTE :
break; (state == DOUBLE_QUOTE_ESCAPE) ? DOUBLE_QUOTE :
VALUE;
case SINGLE_QUOTE:
if (c == 0) {
if (flags & UNQUOTE_RELAX)
goto finish;
return -EINVAL;
} else if (c == '\'')
state = VALUE;
else if (c == '\\')
state = SINGLE_QUOTE_ESCAPE;
else {
if (!GREEDY_REALLOC(s, allocated, sz+2))
return -ENOMEM;
s[sz++] = c;
}
break;
case SINGLE_QUOTE_ESCAPE:
if (c == 0) {
if (flags & UNQUOTE_RELAX)
goto finish;
return -EINVAL;
}
if (!GREEDY_REALLOC(s, allocated, sz+7))
return -ENOMEM;
if (flags & UNQUOTE_CUNESCAPE) {
uint32_t u;
r = cunescape_one(*p, (size_t) -1, &c, &u);
if (r < 0)
return -EINVAL;
(*p) += r - 1;
if (c != 0)
s[sz++] = c;
else
sz += utf8_encode_unichar(s + sz, u);
} else
s[sz++] = c;
state = SINGLE_QUOTE;
break;
case DOUBLE_QUOTE:
if (c == 0)
return -EINVAL;
else if (c == '\"')
state = VALUE;
else if (c == '\\')
state = DOUBLE_QUOTE_ESCAPE;
else {
if (!GREEDY_REALLOC(s, allocated, sz+2))
return -ENOMEM;
s[sz++] = c;
}
break;
case DOUBLE_QUOTE_ESCAPE:
if (c == 0) {
if (flags & UNQUOTE_RELAX)
goto finish;
return -EINVAL;
}
if (!GREEDY_REALLOC(s, allocated, sz+7))
return -ENOMEM;
if (flags & UNQUOTE_CUNESCAPE) {
uint32_t u;
r = cunescape_one(*p, (size_t) -1, &c, &u);
if (r < 0)
return -EINVAL;
(*p) += r - 1;
if (c != 0)
s[sz++] = c;
else
sz += utf8_encode_unichar(s + sz, u);
} else
s[sz++] = c;
state = DOUBLE_QUOTE;
break; break;
case SPACE: case SPACE: