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chromium / external / github.com / git / git / refs/tags/v2.4.0 / . / userdiff.c
blob: 2ccbee50cb69171062e84c9a1b36baf7e31be2f8 [file] [log] [blame]
Jeff Kingd9bae1a2010-04-02 00:12:15[diff] [blame]1#include "cache.h"
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]2#include "userdiff.h"
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]3#include "attr.h"
4
5static struct userdiff_driver *drivers;
6static int ndrivers;
7static int drivers_alloc;
8
Boyd Stephen Smith Jrae3b9702009-01-21 04:59:54[diff] [blame]9#define PATTERNS(name, pattern, word_regex) \
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]10 { name, NULL, -1, { pattern, REG_EXTENDED }, \
11 word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
Brandon Casey909a5492010-09-10 16:18:14[diff] [blame]12#define IPATTERN(name, pattern, word_regex) \
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]13 { name, NULL, -1, { pattern, REG_EXTENDED | REG_ICASE }, \
14 word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]15static struct userdiff_driver builtin_drivers[] = {
Adrian Johnsone90d0652012-09-16 03:54:15[diff] [blame]16IPATTERN("ada",
Adrian Johnson39a87a22014-02-03 11:33:16[diff] [blame]17 "!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n"
Adrian Johnsone90d0652012-09-16 03:54:15[diff] [blame]18 "!^[ \t]*with[ \t].*$\n"
19 "^[ \t]*((procedure|function)[ \t]+.*)$\n"
20 "^[ \t]*((package|protected|task)[ \t]+.*)$",
21 /* -- */
22 "[a-zA-Z][a-zA-Z0-9_]*"
Adrian Johnson39a87a22014-02-03 11:33:16[diff] [blame]23 "|[-+]?[0-9][0-9#_.aAbBcCdDeEfF]*([eE][+-]?[0-9_]+)?"
Adrian Johnsone90d0652012-09-16 03:54:15[diff] [blame]24 "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"),
Brandon Casey909a5492010-09-10 16:18:14[diff] [blame]25IPATTERN("fortran",
26 "!^([C*]|[ \t]*!)\n"
27 "!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n"
28 "^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA"
29 "|([^'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$",
30 /* -- */
31 "[a-zA-Z][a-zA-Z0-9_]*"
32 "|\\.([Ee][Qq]|[Nn][Ee]|[Gg][TtEe]|[Ll][TtEe]|[Tt][Rr][Uu][Ee]|[Ff][Aa][Ll][Ss][Ee]|[Aa][Nn][Dd]|[Oo][Rr]|[Nn]?[Ee][Qq][Vv]|[Nn][Oo][Tt])\\."
33 /* numbers and format statements like 2E14.4, or ES12.6, 9X.
34 * Don't worry about format statements without leading digits since
35 * they would have been matched above as a variable anyway. */
36 "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]37 "|//|\\*\\*|::|[/<>=]="),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]38PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$",
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]39 "[^<>= \t]+"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]40PATTERNS("java",
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]41 "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
Paolo Bonzini959e2e62009-06-17 14:26:06[diff] [blame]42 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",
43 /* -- */
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]44 "[a-zA-Z_][a-zA-Z0-9_]*"
45 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
46 "|[-+*/<>%&^|=!]="
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]47 "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
Gustaf Hendeby53b10a12011-11-15 20:15:03[diff] [blame]48PATTERNS("matlab",
49 "^[[:space:]]*((classdef|function)[[:space:]].*)$|^%%[[:space:]].*$",
50 "[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]51PATTERNS("objc",
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]52 /* Negate C statements that can look like functions */
53 "!^[ \t]*(do|for|if|else|return|switch|while)\n"
54 /* Objective-C methods */
55 "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n"
56 /* C functions */
Paolo Bonzini959e2e62009-06-17 14:26:06[diff] [blame]57 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n"
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]58 /* Objective-C class/protocol definitions */
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]59 "^(@(implementation|interface|protocol)[ \t].*)$",
60 /* -- */
61 "[a-zA-Z_][a-zA-Z0-9_]*"
62 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]63 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]64PATTERNS("pascal",
Alexey Shumkinad5b6942011-01-11 08:53:59[diff] [blame]65 "^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface|"
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]66 "implementation|initialization|finalization)[ \t]*.*)$"
67 "\n"
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]68 "^(.*=[ \t]*(class|record).*)$",
69 /* -- */
70 "[a-zA-Z_][a-zA-Z0-9_]*"
71 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]72 "|<>|<=|>=|:=|\\.\\."),
Jonathan Nieder71a5d4b2010-12-26 09:07:31[diff] [blame]73PATTERNS("perl",
Jonathan Niederea2ca442011-05-21 19:38:26[diff] [blame]74 "^package .*\n"
75 "^sub [[:alnum:]_':]+[ \t]*"
76 "(\\([^)]*\\)[ \t]*)?" /* prototype */
77 /*
78 * Attributes. A regex can't count nested parentheses,
79 * so just slurp up whatever we see, taking care not
80 * to accept lines like "sub foo; # defined elsewhere".
81 *
82 * An attribute could contain a semicolon, but at that
83 * point it seems reasonable enough to give up.
84 */
85 "(:[^;#]*)?"
86 "(\\{[ \t]*)?" /* brace can come here or on the next line */
87 "(#.*)?$\n" /* comment */
Jonathan Niederf143d9c2011-05-22 17:29:32[diff] [blame]88 "^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*"
Jonathan Niederea2ca442011-05-21 19:38:26[diff] [blame]89 "(\\{[ \t]*)?" /* brace can come here or on the next line */
90 "(#.*)?$\n"
Jonathan Nieder12f09672011-05-21 19:35:51[diff] [blame]91 "^=head[0-9] .*", /* POD */
Jonathan Nieder71a5d4b2010-12-26 09:07:31[diff] [blame]92 /* -- */
93 "[[:alpha:]_'][[:alnum:]_']*"
94 "|0[xb]?[0-9a-fA-F_]*"
95 /* taking care not to interpret 3..5 as (3.)(.5) */
96 "|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?"
97 "|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::"
98 "|&&=|\\|\\|=|//=|\\*\\*="
99 "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?"
100 "|[-+*/%.^&<>=!|]="
101 "|=~|!~"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]102 "|<<|<>|<=>|>>"),
Björn Steinbrink6d2f2082010-05-23 18:05:40[diff] [blame]103PATTERNS("php",
104 "^[\t ]*(((public|protected|private|static)[\t ]+)*function.*)$\n"
105 "^[\t ]*(class.*)$",
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]106 /* -- */
107 "[a-zA-Z_][a-zA-Z0-9_]*"
108 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]109 "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]110PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$",
111 /* -- */
112 "[a-zA-Z_][a-zA-Z0-9_]*"
113 "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]114 "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]115 /* -- */
116PATTERNS("ruby", "^[ \t]*((class|module|def)[ \t].*)$",
117 /* -- */
118 "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"
119 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]120 "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]121PATTERNS("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
122 "[={}\"]|[^={}\" \t]+"),
123PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]124 "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+"),
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]125PATTERNS("cpp",
126 /* Jump targets or access declarations */
Johannes Sixt8a2e8da2014-03-21 21:07:22[diff] [blame]127 "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:[[:space:]]*($|/[/*])\n"
128 /* functions/methods, variables, and compounds at top level */
129 "^((::[[:space:]]*)?[A-Za-z_].*)$",
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]130 /* -- */
131 "[a-zA-Z_][a-zA-Z0-9_]*"
Johannes Sixtabf8f982014-03-21 21:07:14[diff] [blame]132 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lLuU]*"
Johannes Sixt407e07f2014-03-21 21:07:13[diff] [blame]133 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*"),
Petr Onderkab2212072010-08-16 17:01:02[diff] [blame]134PATTERNS("csharp",
135 /* Keywords */
136 "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n"
137 /* Methods and constructors */
138 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n"
139 /* Properties */
140 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n"
141 /* Type definitions */
142 "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n"
143 /* Namespace */
144 "^[ \t]*(namespace[ \t]+.*)$",
145 /* -- */
146 "[a-zA-Z_][a-zA-Z0-9_]*"
147 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
Jonathan Nieder664d44e2011-01-11 21:48:50[diff] [blame]148 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
Jeff King122aa6f2008-10-05 21:43:36[diff] [blame]149{ "default", NULL, -1, { NULL, 0 } },
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]150};
Thomas Rast80c49c32009-01-17 16:29:48[diff] [blame]151#undef PATTERNS
Brandon Casey909a5492010-09-10 16:18:14[diff] [blame]152#undef IPATTERN
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]153
154static struct userdiff_driver driver_true = {
155 "diff=true",
156 NULL,
Jeff King122aa6f2008-10-05 21:43:36[diff] [blame]157 0,
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]158 { NULL, 0 }
159};
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]160
161static struct userdiff_driver driver_false = {
162 "!diff",
163 NULL,
Jeff King122aa6f2008-10-05 21:43:36[diff] [blame]164 1,
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]165 { NULL, 0 }
166};
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]167
168static struct userdiff_driver *userdiff_find_by_namelen(const char *k, int len)
169{
170 int i;
171 for (i = 0; i < ndrivers; i++) {
172 struct userdiff_driver *drv = drivers + i;
173 if (!strncmp(drv->name, k, len) && !drv->name[len])
174 return drv;
175 }
176 for (i = 0; i < ARRAY_SIZE(builtin_drivers); i++) {
177 struct userdiff_driver *drv = builtin_drivers + i;
178 if (!strncmp(drv->name, k, len) && !drv->name[len])
179 return drv;
180 }
181 return NULL;
182}
183
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]184static int parse_funcname(struct userdiff_funcname *f, const char *k,
185 const char *v, int cflags)
186{
187 if (git_config_string(&f->pattern, k, v) < 0)
188 return -1;
189 f->cflags = cflags;
Jeff King6680a082012-02-07 18:23:02[diff] [blame]190 return 0;
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]191}
192
Jeff King122aa6f2008-10-05 21:43:36[diff] [blame]193static int parse_tristate(int *b, const char *k, const char *v)
194{
195 if (v && !strcasecmp(v, "auto"))
196 *b = -1;
197 else
198 *b = git_config_bool(k, v);
Jeff King6680a082012-02-07 18:23:02[diff] [blame]199 return 0;
Jeff King122aa6f2008-10-05 21:43:36[diff] [blame]200}
201
Jeff Kingd9bae1a2010-04-02 00:12:15[diff] [blame]202static int parse_bool(int *b, const char *k, const char *v)
203{
204 *b = git_config_bool(k, v);
Jeff King6680a082012-02-07 18:23:02[diff] [blame]205 return 0;
Jeff Kingd9bae1a2010-04-02 00:12:15[diff] [blame]206}
207
Jeff Kingc7534ef2008-10-26 04:45:55[diff] [blame]208int userdiff_config(const char *k, const char *v)
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]209{
210 struct userdiff_driver *drv;
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]211 const char *name, *type;
212 int namelen;
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]213
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]214 if (parse_config_key(k, "diff", &name, &namelen, &type) || !name)
215 return 0;
216
217 drv = userdiff_find_by_namelen(name, namelen);
218 if (!drv) {
219 ALLOC_GROW(drivers, ndrivers+1, drivers_alloc);
220 drv = &drivers[ndrivers++];
221 memset(drv, 0, sizeof(*drv));
222 drv->name = xmemdupz(name, namelen);
223 drv->binary = -1;
224 }
225
226 if (!strcmp(type, "funcname"))
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]227 return parse_funcname(&drv->funcname, k, v, 0);
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]228 if (!strcmp(type, "xfuncname"))
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]229 return parse_funcname(&drv->funcname, k, v, REG_EXTENDED);
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]230 if (!strcmp(type, "binary"))
Jeff King122aa6f2008-10-05 21:43:36[diff] [blame]231 return parse_tristate(&drv->binary, k, v);
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]232 if (!strcmp(type, "command"))
Jeff King6680a082012-02-07 18:23:02[diff] [blame]233 return git_config_string(&drv->external, k, v);
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]234 if (!strcmp(type, "textconv"))
Jeff King6680a082012-02-07 18:23:02[diff] [blame]235 return git_config_string(&drv->textconv, k, v);
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]236 if (!strcmp(type, "cachetextconv"))
Jeff Kingd9bae1a2010-04-02 00:12:15[diff] [blame]237 return parse_bool(&drv->textconv_want_cache, k, v);
Jeff King0a5987f2013-01-23 06:25:07[diff] [blame]238 if (!strcmp(type, "wordregex"))
Jeff King6680a082012-02-07 18:23:02[diff] [blame]239 return git_config_string(&drv->word_regex, k, v);
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]240
241 return 0;
242}
243
244struct userdiff_driver *userdiff_find_by_name(const char *name) {
245 int len = strlen(name);
246 return userdiff_find_by_namelen(name, len);
247}
248
249struct userdiff_driver *userdiff_find_by_path(const char *path)
250{
251 static struct git_attr *attr;
252 struct git_attr_check check;
253
254 if (!attr)
Junio C Hamano7fb0eaa2010-01-17 04:39:59[diff] [blame]255 attr = git_attr("diff");
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]256 check.attr = attr;
257
258 if (!path)
259 return NULL;
Michael Haggertyd932f4e2011-08-04 04:36:33[diff] [blame]260 if (git_check_attr(path, 1, &check))
Jeff Kingbe58e702008-10-05 21:43:21[diff] [blame]261 return NULL;
262
263 if (ATTR_TRUE(check.value))
264 return &driver_true;
265 if (ATTR_FALSE(check.value))
266 return &driver_false;
267 if (ATTR_UNSET(check.value))
268 return NULL;
269 return userdiff_find_by_name(check.value);
270}
Jeff King3813e692011-05-23 20:30:14[diff] [blame]271
272struct userdiff_driver *userdiff_get_textconv(struct userdiff_driver *driver)
273{
274 if (!driver->textconv)
275 return NULL;
276
277 if (driver->textconv_want_cache && !driver->textconv_cache) {
278 struct notes_cache *c = xmalloc(sizeof(*c));
279 struct strbuf name = STRBUF_INIT;
280
281 strbuf_addf(&name, "textconv/%s", driver->name);
282 notes_cache_init(c, name.buf, driver->textconv);
283 driver->textconv_cache = c;
284 }
285
286 return driver;
287}