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Unified Diff: tracing/third_party/tvcm/third_party/rcssmin/rcssmin.c

Issue 1376953005: Move tracing/third_party/tvcm -> third_party/py_vulcanize. (Closed) Base URL: git@github.com:catapult-project/catapult.git@master
Patch Set: Created 5 years, 2 months ago
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« third_party/py_vulcanize/README.chromium ('K') | « tracing/third_party/tvcm/third_party/rcssmin/package.cfg ('k') | tracing/third_party/tvcm/third_party/rcssmin/rcssmin.py » ('j') | no next file with comments »
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Index: tracing/third_party/tvcm/third_party/rcssmin/rcssmin.c
diff --git a/tracing/third_party/tvcm/third_party/rcssmin/rcssmin.c b/tracing/third_party/tvcm/third_party/rcssmin/rcssmin.c
deleted file mode 100644
index a722fc276a9103960e78f26308dbcd72bf8ff207..0000000000000000000000000000000000000000
--- a/tracing/third_party/tvcm/third_party/rcssmin/rcssmin.c
+++ /dev/null
@@ -1,1163 +0,0 @@
-/*
- * Copyright 2011 - 2014
- * Andr\xe9 Malo or his licensors, as applicable
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "cext.h"
-EXT_INIT_FUNC;
-
-#ifdef EXT3
-typedef Py_UNICODE rchar;
-#else
-typedef unsigned char rchar;
-#endif
-#define U(c) ((rchar)(c))
-
-typedef struct {
- const rchar *start;
- const rchar *sentinel;
- const rchar *tsentinel;
- Py_ssize_t at_group;
- int in_macie5;
- int in_rule;
- int keep_bang_comments;
-} rcssmin_ctx_t;
-
-typedef enum {
- NEED_SPACE_MAYBE = 0,
- NEED_SPACE_NEVER
-} need_space_flag;
-
-
-#define RCSSMIN_DULL_BIT (1 << 0)
-#define RCSSMIN_HEX_BIT (1 << 1)
-#define RCSSMIN_ESC_BIT (1 << 2)
-#define RCSSMIN_SPACE_BIT (1 << 3)
-#define RCSSMIN_STRING_DULL_BIT (1 << 4)
-#define RCSSMIN_NMCHAR_BIT (1 << 5)
-#define RCSSMIN_URI_DULL_BIT (1 << 6)
-#define RCSSMIN_PRE_CHAR_BIT (1 << 7)
-#define RCSSMIN_POST_CHAR_BIT (1 << 8)
-
-static const unsigned short rcssmin_charmask[128] = {
- 21, 21, 21, 21, 21, 21, 21, 21,
- 21, 28, 8, 21, 8, 8, 21, 21,
- 21, 21, 21, 21, 21, 21, 21, 21,
- 21, 21, 21, 21, 21, 21, 21, 21,
- 28, 469, 4, 85, 85, 85, 85, 4,
- 149, 277, 85, 469, 469, 117, 85, 84,
- 115, 115, 115, 115, 115, 115, 115, 115,
- 115, 115, 468, 340, 85, 469, 468, 85,
- 84, 115, 115, 115, 115, 115, 115, 117,
- 117, 117, 117, 117, 117, 117, 117, 117,
- 117, 117, 117, 117, 117, 117, 117, 117,
- 117, 117, 117, 213, 4, 341, 85, 117,
- 85, 115, 115, 115, 115, 115, 115, 117,
- 117, 117, 117, 117, 117, 117, 117, 117,
- 117, 117, 117, 117, 117, 116, 117, 117,
- 117, 117, 117, 468, 85, 468, 85, 21
-};
-
-#define RCSSMIN_IS_DULL(c) ((U(c) > 127) || \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_DULL_BIT))
-
-#define RCSSMIN_IS_HEX(c) ((U(c) <= 127) && \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_HEX_BIT))
-
-#define RCSSMIN_IS_ESC(c) ((U(c) > 127) || \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_ESC_BIT))
-
-#define RCSSMIN_IS_SPACE(c) ((U(c) <= 127) && \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_SPACE_BIT))
-
-#define RCSSMIN_IS_STRING_DULL(c) ((U(c) > 127) || \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_STRING_DULL_BIT))
-
-#define RCSSMIN_IS_NMCHAR(c) ((U(c) > 127) || \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_NMCHAR_BIT))
-
-#define RCSSMIN_IS_URI_DULL(c) ((U(c) > 127) || \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_URI_DULL_BIT))
-
-#define RCSSMIN_IS_PRE_CHAR(c) ((U(c) <= 127) && \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_PRE_CHAR_BIT))
-
-#define RCSSMIN_IS_POST_CHAR(c) ((U(c) <= 127) && \
- (rcssmin_charmask[U(c) & 0x7F] & RCSSMIN_POST_CHAR_BIT))
-
-
-static const rchar pattern_url[] = {
- /*U('u'),*/ U('r'), U('l'), U('(')
-};
-
-static const rchar pattern_ie7[] = {
- /*U('>'),*/ U('/'), U('*'), U('*'), U('/')
-};
-
-static const rchar pattern_media[] = {
- U('m'), U('e'), U('d'), U('i'), U('a'),
- U('M'), U('E'), U('D'), U('I'), U('A')
-};
-
-static const rchar pattern_document[] = {
- U('d'), U('o'), U('c'), U('u'), U('m'), U('e'), U('n'), U('t'),
- U('D'), U('O'), U('C'), U('U'), U('M'), U('E'), U('N'), U('T')
-};
-
-static const rchar pattern_supports[] = {
- U('s'), U('u'), U('p'), U('p'), U('o'), U('r'), U('t'), U('s'),
- U('S'), U('U'), U('P'), U('P'), U('O'), U('R'), U('T'), U('S')
-};
-
-static const rchar pattern_keyframes[] = {
- U('k'), U('e'), U('y'), U('f'), U('r'), U('a'), U('m'), U('e'), U('s'),
- U('K'), U('E'), U('Y'), U('F'), U('R'), U('A'), U('M'), U('E'), U('S')
-};
-
-static const rchar pattern_vendor_o[] = {
- U('-'), U('o'), U('-'),
- U('-'), U('O'), U('-')
-};
-
-static const rchar pattern_vendor_moz[] = {
- U('-'), U('m'), U('o'), U('z'), U('-'),
- U('-'), U('M'), U('O'), U('Z'), U('-')
-};
-
-static const rchar pattern_vendor_webkit[] = {
- U('-'), U('w'), U('e'), U('b'), U('k'), U('i'), U('t'), U('-'),
- U('-'), U('W'), U('E'), U('B'), U('K'), U('I'), U('T'), U('-')
-};
-
-static const rchar pattern_vendor_ms[] = {
- U('-'), U('m'), U('s'), U('-'),
- U('-'), U('M'), U('S'), U('-')
-};
-
-static const rchar pattern_first[] = {
- U('f'), U('i'), U('r'), U('s'), U('t'), U('-'), U('l'),
- U('F'), U('I'), U('R'), U('S'), U('T'), U('-'), U('L')
-};
-
-static const rchar pattern_line[] = {
- U('i'), U('n'), U('e'),
- U('I'), U('N'), U('E'),
-};
-
-static const rchar pattern_letter[] = {
- U('e'), U('t'), U('t'), U('e'), U('r'),
- U('E'), U('T'), U('T'), U('E'), U('R')
-};
-
-static const rchar pattern_macie5_init[] = {
- U('/'), U('*'), U('\\'), U('*'), U('/')
-};
-
-static const rchar pattern_macie5_exit[] = {
- U('/'), U('*'), U('*'), U('/')
-};
-
-/*
- * Match a pattern (and copy immediately to target)
- */
-#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wstrict-overflow"
-#endif
-static int
-copy_match(const rchar *pattern, const rchar *psentinel,
- const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
- rchar c;
-
- while (pattern < psentinel
- && source < ctx->sentinel && target < ctx->tsentinel
- && ((c = *source++) == *pattern++))
- *target++ = c;
-
- *source_ = source;
- *target_ = target;
-
- return (pattern == psentinel);
-}
-#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
-#pragma GCC diagnostic pop
-#endif
-
-#define MATCH(PAT, source, target, ctx) ( \
- copy_match(pattern_##PAT, \
- pattern_##PAT + sizeof(pattern_##PAT) / sizeof(rchar), \
- source, target, ctx) \
-)
-
-
-/*
- * Match a pattern (and copy immediately to target) - CI version
- */
-static int
-copy_imatch(const rchar *pattern, const rchar *psentinel,
- const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_, *pstart = pattern;
- rchar *target = *target_;
- rchar c;
-
- while (pattern < psentinel
- && source < ctx->sentinel && target < ctx->tsentinel
- && ((c = *source++) == *pattern
- || c == pstart[(pattern - pstart) + (psentinel - pstart)])) {
- ++pattern;
- *target++ = c;
- }
-
- *source_ = source;
- *target_ = target;
-
- return (pattern == psentinel);
-}
-
-#define IMATCH(PAT, source, target, ctx) ( \
- copy_imatch(pattern_##PAT, \
- pattern_##PAT + sizeof(pattern_##PAT) / sizeof(rchar) / 2, \
- source, target, ctx) \
-)
-
-
-/*
- * Copy characters
- */
-#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wstrict-overflow"
-#endif
-static int
-copy(const rchar *source, const rchar *sentinel, rchar **target_,
- rcssmin_ctx_t *ctx)
-{
- rchar *target = *target_;
-
- while (source < sentinel && target < ctx->tsentinel)
- *target++ = *source++;
-
- *target_ = target;
-
- return (source == sentinel);
-}
-#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
-#pragma GCC diagnostic pop
-#endif
-
-#define COPY_PAT(PAT, target, ctx) ( \
- copy(pattern_##PAT, \
- pattern_##PAT + sizeof(pattern_##PAT) / sizeof(rchar), \
- target, ctx) \
-)
-
-
-/*
- * The ABORT macros work with known local variables!
- */
-#define ABORT_(RET) do { \
- if (source < ctx->sentinel && !(target < ctx->tsentinel)) { \
- *source_ = source; \
- *target_ = target; \
- } \
- return RET; \
-} while(0)
-
-
-#define CRAPPY_C90_COMPATIBLE_EMPTY
-#define ABORT ABORT_(CRAPPY_C90_COMPATIBLE_EMPTY)
-#define RABORT(RET) ABORT_((RET))
-
-
-/*
- * Copy escape
- */
-static void
-copy_escape(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_, *hsentinel;
- rchar *target = *target_;
- rchar c;
-
- *target++ = U('\\');
- *target_ = target;
-
- if (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source++;
- if (RCSSMIN_IS_ESC(c)) {
- *target++ = c;
- }
- else if (RCSSMIN_IS_HEX(c)) {
- *target++ = c;
-
- /* 6 hex chars max, one we got already */
- if (ctx->sentinel - source > 5)
- hsentinel = source + 5;
- else
- hsentinel = ctx->sentinel;
-
- while (source < hsentinel && target < ctx->tsentinel
- && (c = *source, RCSSMIN_IS_HEX(c))) {
- ++source;
- *target++ = c;
- }
-
- /* One optional space after */
- if (source < ctx->sentinel && target < ctx->tsentinel) {
- if (source == hsentinel)
- c = *source;
- if (RCSSMIN_IS_SPACE(c)) {
- ++source;
- *target++ = U(' ');
- if (c == U('\r') && source < ctx->sentinel
- && *source == U('\n'))
- ++source;
- }
- }
- }
- }
-
- *target_ = target;
- *source_ = source;
-}
-
-
-/*
- * Copy string
- */
-static void
-copy_string(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
- rchar c, quote = source[-1];
-
- *target++ = quote;
- *target_ = target;
-
- while (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *target++ = *source++;
- if (RCSSMIN_IS_STRING_DULL(c))
- continue;
-
- switch (c) {
- case U('\''): case U('"'):
- if (c == quote) {
- *target_ = target;
- *source_ = source;
- return;
- }
- continue;
-
- case U('\\'):
- if (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source++;
- switch (c) {
- case U('\r'):
- if (source < ctx->sentinel && *source == U('\n'))
- ++source;
- /* fall through */
-
- case U('\n'): case U('\f'):
- --target;
- break;
-
- default:
- *target++ = c;
- }
- }
- continue;
- }
- break; /* forbidden characters */
- }
-
- ABORT;
-}
-
-
-/*
- * Copy URI string
- */
-static int
-copy_uri_string(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
- rchar c, quote = source[-1];
-
- *target++ = quote;
- *target_ = target;
-
- while (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source++;
- if (RCSSMIN_IS_SPACE(c))
- continue;
- *target++ = c;
- if (RCSSMIN_IS_STRING_DULL(c))
- continue;
-
- switch (c) {
- case U('\''): case U('"'):
- if (c == quote) {
- *target_ = target;
- *source_ = source;
- return 0;
- }
- continue;
-
- case U('\\'):
- if (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source;
- switch (c) {
- case U('\r'):
- if ((source + 1) < ctx->sentinel && source[1] == U('\n'))
- ++source;
- /* fall through */
-
- case U('\n'): case U('\f'):
- --target;
- ++source;
- break;
-
- default:
- --target;
- copy_escape(&source, &target, ctx);
- }
- }
- continue;
- }
-
- break; /* forbidden characters */
- }
-
- RABORT(-1);
-}
-
-
-/*
- * Copy URI (unquoted)
- */
-static int
-copy_uri_unquoted(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
- rchar c;
-
- *target++ = source[-1];
- *target_ = target;
-
- while (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source++;
- if (RCSSMIN_IS_SPACE(c))
- continue;
- *target++ = c;
- if (RCSSMIN_IS_URI_DULL(c))
- continue;
-
- switch (c) {
-
- case U(')'):
- *target_ = target - 1;
- *source_ = source - 1;
- return 0;
-
- case U('\\'):
- if (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source;
- switch (c) {
- case U('\r'):
- if ((source + 1) < ctx->sentinel && source[1] == U('\n'))
- ++source;
- /* fall through */
-
- case U('\n'): case U('\f'):
- --target;
- ++source;
- break;
-
- default:
- --target;
- copy_escape(&source, &target, ctx);
- }
- }
- continue;
- }
-
- break; /* forbidden characters */
- }
-
- RABORT(-1);
-}
-
-
-/*
- * Copy url
- */
-static void
-copy_url(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
- rchar c;
-
- *target++ = U('u');
- *target_ = target;
-
- /* Must not be inside an identifier */
- if ((source != ctx->start + 1) && RCSSMIN_IS_NMCHAR(source[-2]))
- return;
-
- if (!MATCH(url, &source, &target, ctx)
- || !(source < ctx->sentinel && target < ctx->tsentinel))
- ABORT;
-
- while (source < ctx->sentinel && RCSSMIN_IS_SPACE(*source))
- ++source;
-
- if (!(source < ctx->sentinel))
- ABORT;
-
- c = *source++;
- switch (c) {
- case U('"'): case U('\''):
- if (copy_uri_string(&source, &target, ctx) == -1)
- ABORT;
-
- while (source < ctx->sentinel && RCSSMIN_IS_SPACE(*source))
- ++source;
- break;
-
- default:
- if (copy_uri_unquoted(&source, &target, ctx) == -1)
- ABORT;
- }
-
- if (!(source < ctx->sentinel && target < ctx->tsentinel))
- ABORT;
-
- if ((*target++ = *source++) != U(')'))
- ABORT;
-
- *target_ = target;
- *source_ = source;
-}
-
-
-/*
- * Copy @-group
- */
-static void
-copy_at_group(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
-
- *target++ = U('@');
- *target_ = target;
-
-#define REMATCH(what) ( \
- source = *source_, \
- target = *target_, \
- IMATCH(what, &source, &target, ctx) \
-)
-#define CMATCH(what) IMATCH(what, &source, &target, ctx)
-
- if (( !CMATCH(media)
- && !REMATCH(supports)
- && !REMATCH(document)
- && !REMATCH(keyframes)
- && !(REMATCH(vendor_webkit) && CMATCH(keyframes))
- && !(REMATCH(vendor_moz) && CMATCH(keyframes))
- && !(REMATCH(vendor_o) && CMATCH(keyframes))
- && !(REMATCH(vendor_ms) && CMATCH(keyframes)))
- || !(source < ctx->sentinel && target < ctx->tsentinel)
- || RCSSMIN_IS_NMCHAR(*source))
- ABORT;
-
-#undef CMATCH
-#undef REMATCH
-
- ++ctx->at_group;
-
- *target_ = target;
- *source_ = source;
-}
-
-
-/*
- * Skip space
- */
-static const rchar *
-skip_space(const rchar *source, rcssmin_ctx_t *ctx)
-{
- const rchar *begin = source;
- int res;
- rchar c;
-
- while (source < ctx->sentinel) {
- c = *source;
- if (RCSSMIN_IS_SPACE(c)) {
- ++source;
- continue;
- }
- else if (c == U('/')) {
- ++source;
- if (!(source < ctx->sentinel && *source == U('*'))) {
- --source;
- break;
- }
- ++source;
- res = 0;
- while (source < ctx->sentinel) {
- c = *source++;
- if (c != U('*'))
- continue;
- if (!(source < ctx->sentinel))
- return begin;
- if (*source != U('/'))
- continue;
-
- /* Comment complete */
- ++source;
- res = 1;
- break;
- }
- if (!res)
- return begin;
-
- continue;
- }
-
- break;
- }
-
- return source;
-}
-
-
-/*
- * Copy space
- */
-static void
-copy_space(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx,
- need_space_flag need_space)
-{
- const rchar *source = *source_, *end, *comment;
- rchar *target = *target_;
- int res;
- rchar c;
-
- --source;
- if (need_space == NEED_SPACE_MAYBE
- && source > ctx->start
- && !RCSSMIN_IS_PRE_CHAR(source[-1])
- && (end = skip_space(source, ctx)) < ctx->sentinel
- && (!RCSSMIN_IS_POST_CHAR(*end)
- || (*end == U(':') && !ctx->in_rule && !ctx->at_group))) {
-
- if (!(target < ctx->tsentinel))
- ABORT;
- *target++ = U(' ');
- }
-
- while (source < ctx->sentinel) {
- switch (c = *source) {
-
- /* comment */
- case U('/'):
- comment = source++;
- if (!((source < ctx->sentinel && *source == U('*')))) {
- --source;
- break;
- }
- ++source;
- res = 0;
- while (source < ctx->sentinel) {
- c = *source++;
- if (c != U('*'))
- continue;
- if (!(source < ctx->sentinel))
- ABORT;
- if (*source != U('/'))
- continue;
-
- /* Comment complete */
- ++source;
- res = 1;
-
- if (ctx->keep_bang_comments && comment[2] == U('!')) {
- ctx->in_macie5 = (source[-3] == U('\\'));
- if (!copy(comment, source, &target, ctx))
- ABORT;
- }
- else if (source[-3] == U('\\')) {
- if (!ctx->in_macie5) {
- if (!COPY_PAT(macie5_init, &target, ctx))
- ABORT;
- }
- ctx->in_macie5 = 1;
- }
- else if (ctx->in_macie5) {
- if (!COPY_PAT(macie5_exit, &target, ctx))
- ABORT;
- ctx->in_macie5 = 0;
- }
- /* else don't copy anything */
- break;
- }
- if (!res)
- ABORT;
- continue;
-
- /* space */
- case U(' '): case U('\t'): case U('\r'): case U('\n'): case U('\f'):
- ++source;
- continue;
- }
-
- break;
- }
-
- *source_ = source;
- *target_ = target;
-}
-
-
-/*
- * Copy space if comment
- */
-static int
-copy_space_comment(const rchar **source_, rchar **target_,
- rcssmin_ctx_t *ctx, need_space_flag need_space)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
-
- if (source < ctx->sentinel && *source == U('*')) {
- copy_space(source_, target_, ctx, need_space);
- if (*source_ > source)
- return 0;
- }
- if (!(target < ctx->tsentinel))
- RABORT(-1);
-
- *target++ = source[-1];
-
- /* *source_ = source; <-- unchanged */
- *target_ = target;
-
- return -1;
-}
-
-
-/*
- * Copy space if exists
- */
-static int
-copy_space_optional(const rchar **source_, rchar **target_,
- rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
-
- if (!(source < ctx->sentinel))
- return -1;
-
- if (*source == U('/')) {
- *source_ = source + 1;
- return copy_space_comment(source_, target_, ctx, NEED_SPACE_NEVER);
- }
- else if (RCSSMIN_IS_SPACE(*source)) {
- *source_ = source + 1;
- copy_space(source_, target_, ctx, NEED_SPACE_NEVER);
- return 0;
- }
-
- return -1;
-}
-
-
-/*
- * Copy :first-line|letter
- */
-static void
-copy_first(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_, *next, *source_fork;
- rchar *target = *target_, *target_fork;
-
- *target++ = U(':');
- *target_ = target;
-
- if (!IMATCH(first, &source, &target, ctx)
- || !(source < ctx->sentinel && target < ctx->tsentinel))
- ABORT;
-
- source_fork = source;
- target_fork = target;
-
- if (!IMATCH(line, &source, &target, ctx)) {
- source = source_fork;
- target = target_fork;
-
- if (!IMATCH(letter, &source, &target, ctx)
- || !(source < ctx->sentinel && target < ctx->tsentinel))
- ABORT;
- }
-
- next = skip_space(source, ctx);
- if (!(next < ctx->sentinel && target < ctx->tsentinel
- && (*next == U('{') || *next == U(','))))
- ABORT;
-
- *target++ = U(' ');
- *target_ = target;
- *source_ = source;
- (void)copy_space_optional(source_, target_, ctx);
-}
-
-
-/*
- * Copy IE7 hack
- */
-static void
-copy_ie7hack(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_;
- rchar *target = *target_;
-
- *target++ = U('>');
- *target_ = target;
-
- if (ctx->in_rule || ctx->at_group)
- return; /* abort */
-
- if (!MATCH(ie7, &source, &target, ctx))
- ABORT;
-
- ctx->in_macie5 = 0;
-
- *target_ = target;
- *source_ = source;
-
- (void)copy_space_optional(source_, target_, ctx);
-}
-
-
-/*
- * Copy semicolon; miss out duplicates or even this one (before '}')
- */
-static void
-copy_semicolon(const rchar **source_, rchar **target_, rcssmin_ctx_t *ctx)
-{
- const rchar *source = *source_, *begin, *end;
- rchar *target = *target_;
-
- begin = source;
- while (source < ctx->sentinel) {
- end = skip_space(source, ctx);
- if (!(end < ctx->sentinel)) {
- if (!(target < ctx->tsentinel))
- ABORT;
- *target++ = U(';');
- break;
- }
- switch (*end) {
- case U(';'):
- source = end + 1;
- continue;
-
- case U('}'):
- if (ctx->in_rule)
- break;
-
- /* fall through */
- default:
- if (!(target < ctx->tsentinel))
- ABORT;
- *target++ = U(';');
- break;
- }
-
- break;
- }
-
- source = begin;
- *target_ = target;
- while (source < ctx->sentinel) {
- if (*source == U(';')) {
- ++source;
- continue;
- }
-
- if (copy_space_optional(&source, target_, ctx) == 0)
- continue;
-
- break;
- }
-
- *source_ = source;
-}
-
-
-/*
- * Main function
- *
- * The return value determines the result length (kept in the target buffer).
- * However, if the target buffer is too small, the return value is greater
- * than tlength. The difference to tlength is the number of unconsumed source
- * characters at the time the buffer was full. In this case you should resize
- * the target buffer to the return value and call rcssmin again. Repeat as
- * often as needed.
- */
-static Py_ssize_t
-rcssmin(const rchar *source, rchar *target, Py_ssize_t slength,
- Py_ssize_t tlength, int keep_bang_comments)
-{
- rcssmin_ctx_t ctx_, *ctx = &ctx_;
- const rchar *tstart = target;
- rchar c;
-
- ctx->start = source;
- ctx->sentinel = source + slength;
- ctx->tsentinel = target + tlength;
- ctx->at_group = 0;
- ctx->in_macie5 = 0;
- ctx->in_rule = 0;
- ctx->keep_bang_comments = keep_bang_comments;
-
- while (source < ctx->sentinel && target < ctx->tsentinel) {
- c = *source++;
- if (RCSSMIN_IS_DULL(c)) {
- *target++ = c;
- continue;
- }
- else if (RCSSMIN_IS_SPACE(c)) {
- copy_space(&source, &target, ctx, NEED_SPACE_MAYBE);
- continue;
- }
-
- switch (c) {
-
- /* Escape */
- case U('\\'):
- copy_escape(&source, &target, ctx);
- continue;
-
- /* String */
- case U('"'): case U('\''):
- copy_string(&source, &target, ctx);
- continue;
-
- /* URL */
- case U('u'):
- copy_url(&source, &target, ctx);
- continue;
-
- /* IE7hack */
- case U('>'):
- copy_ie7hack(&source, &target, ctx);
- continue;
-
- /* @-group */
- case U('@'):
- copy_at_group(&source, &target, ctx);
- continue;
-
- /* ; */
- case U(';'):
- copy_semicolon(&source, &target, ctx);
- continue;
-
- /* :first-line|letter followed by [{,] */
- /* (apparently needed for IE6) */
- case U(':'):
- copy_first(&source, &target, ctx);
- continue;
-
- /* { */
- case U('{'):
- if (ctx->at_group)
- --ctx->at_group;
- else
- ++ctx->in_rule;
- *target++ = c;
- continue;
-
- /* } */
- case U('}'):
- if (ctx->in_rule)
- --ctx->in_rule;
- *target++ = c;
- continue;
-
- /* space starting with comment */
- case U('/'):
- (void)copy_space_comment(&source, &target, ctx, NEED_SPACE_MAYBE);
- continue;
-
- /* Fallback: copy character. Better safe than sorry. Should not be
- * reached, though */
- default:
- *target++ = c;
- continue;
- }
- }
-
- return
- (Py_ssize_t)(target - tstart) + (Py_ssize_t)(ctx->sentinel - source);
-}
-
-
-PyDoc_STRVAR(rcssmin_cssmin__doc__,
-"cssmin(style, keep_bang_comments=False)\n\
-\n\
-Minify CSS.\n\
-\n\
-:Note: This is a hand crafted C implementation built on the regex\n\
- semantics.\n\
-\n\
-:Parameters:\n\
- `style` : ``str``\n\
- CSS to minify\n\
-\n\
-:Return: Minified style\n\
-:Rtype: ``str``");
-
-static PyObject *
-rcssmin_cssmin(PyObject *self, PyObject *args, PyObject *kwds)
-{
- PyObject *style, *keep_bang_comments_ = NULL, *result;
- static char *kwlist[] = {"style", "keep_bang_comments", NULL};
- Py_ssize_t rlength, slength, length;
- int keep_bang_comments;
-#ifdef EXT2
- int uni;
-#define UOBJ "O"
-#endif
-#ifdef EXT3
-#define UOBJ "U"
-#endif
-
- if (!PyArg_ParseTupleAndKeywords(args, kwds, UOBJ "|O", kwlist,
- &style, &keep_bang_comments_))
- return NULL;
-
- if (!keep_bang_comments_)
- keep_bang_comments = 0;
- else {
- keep_bang_comments = PyObject_IsTrue(keep_bang_comments_);
- if (keep_bang_comments == -1)
- return NULL;
- }
-
-#ifdef EXT2
- if (PyUnicode_Check(style)) {
- if (!(style = PyUnicode_AsUTF8String(style)))
- return NULL;
- uni = 1;
- }
- else {
- if (!(style = PyObject_Str(style)))
- return NULL;
- uni = 0;
- }
-#endif
-
-#ifdef EXT3
- Py_INCREF(style);
-#define PyString_GET_SIZE PyUnicode_GET_SIZE
-#define PyString_AS_STRING PyUnicode_AS_UNICODE
-#define _PyString_Resize PyUnicode_Resize
-#define PyString_FromStringAndSize PyUnicode_FromUnicode
-#endif
-
- rlength = slength = PyString_GET_SIZE(style);
-
-again:
- if (!(result = PyString_FromStringAndSize(NULL, rlength))) {
- Py_DECREF(style);
- return NULL;
- }
- Py_BEGIN_ALLOW_THREADS
- length = rcssmin((rchar *)PyString_AS_STRING(style),
- (rchar *)PyString_AS_STRING(result),
- slength, rlength, keep_bang_comments);
- Py_END_ALLOW_THREADS
-
- if (length > rlength) {
- Py_DECREF(result);
- rlength = length;
- goto again;
- }
-
- Py_DECREF(style);
- if (length < 0) {
- Py_DECREF(result);
- return NULL;
- }
- if (length != rlength && _PyString_Resize(&result, length) == -1)
- return NULL;
-
-#ifdef EXT2
- if (uni) {
- style = PyUnicode_DecodeUTF8(PyString_AS_STRING(result),
- PyString_GET_SIZE(result), "strict");
- Py_DECREF(result);
- if (!style)
- return NULL;
- result = style;
- }
-#endif
- return result;
-}
-
-/* ------------------------ BEGIN MODULE DEFINITION ------------------------ */
-
-EXT_METHODS = {
- {"cssmin",
- (PyCFunction)rcssmin_cssmin, METH_VARARGS | METH_KEYWORDS,
- rcssmin_cssmin__doc__},
-
- {NULL} /* Sentinel */
-};
-
-PyDoc_STRVAR(EXT_DOCS_VAR,
-"C implementation of rcssmin\n\
-===========================\n\
-\n\
-C implementation of rcssmin.");
-
-
-EXT_DEFINE(EXT_MODULE_NAME, EXT_METHODS_VAR, EXT_DOCS_VAR);
-
-EXT_INIT_FUNC {
- PyObject *m;
-
- /* Create the module and populate stuff */
- if (!(m = EXT_CREATE(&EXT_DEFINE_VAR)))
- EXT_INIT_ERROR(NULL);
-
- EXT_ADD_UNICODE(m, "__author__", "Andr\xe9 Malo", "latin-1");
- EXT_ADD_STRING(m, "__docformat__", "restructuredtext en");
-
- EXT_INIT_RETURN(m);
-}
-
-/* ------------------------- END MODULE DEFINITION ------------------------- */
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