convert some config callbacks to parse_config_key
[git/git.git] / userdiff.c
CommitLineData
d9bae1a1 1#include "cache.h"
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2#include "userdiff.h"
3#include "cache.h"
4#include "attr.h"
5
6static struct userdiff_driver *drivers;
7static int ndrivers;
8static int drivers_alloc;
9
ae3b970a 10#define PATTERNS(name, pattern, word_regex) \
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11 { name, NULL, -1, { pattern, REG_EXTENDED }, \
12 word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
909a5494 13#define IPATTERN(name, pattern, word_regex) \
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14 { name, NULL, -1, { pattern, REG_EXTENDED | REG_ICASE }, \
15 word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
be58e70d 16static struct userdiff_driver builtin_drivers[] = {
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17IPATTERN("ada",
18 "!^(.*[ \t])?(is new|renames|is separate)([ \t].*)?$\n"
19 "!^[ \t]*with[ \t].*$\n"
20 "^[ \t]*((procedure|function)[ \t]+.*)$\n"
21 "^[ \t]*((package|protected|task)[ \t]+.*)$",
22 /* -- */
23 "[a-zA-Z][a-zA-Z0-9_]*"
24 "|[0-9][-+0-9#_.eE]"
25 "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"),
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26IPATTERN("fortran",
27 "!^([C*]|[ \t]*!)\n"
28 "!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n"
29 "^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA"
30 "|([^'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$",
31 /* -- */
32 "[a-zA-Z][a-zA-Z0-9_]*"
33 "|\\.([Ee][Qq]|[Nn][Ee]|[Gg][TtEe]|[Ll][TtEe]|[Tt][Rr][Uu][Ee]|[Ff][Aa][Ll][Ss][Ee]|[Aa][Nn][Dd]|[Oo][Rr]|[Nn]?[Ee][Qq][Vv]|[Nn][Oo][Tt])\\."
34 /* numbers and format statements like 2E14.4, or ES12.6, 9X.
35 * Don't worry about format statements without leading digits since
36 * they would have been matched above as a variable anyway. */
37 "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"
664d44ee 38 "|//|\\*\\*|::|[/<>=]="),
80c49c3d 39PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$",
664d44ee 40 "[^<>= \t]+"),
80c49c3d 41PATTERNS("java",
be58e70d 42 "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
959e2e64
PB
43 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",
44 /* -- */
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45 "[a-zA-Z_][a-zA-Z0-9_]*"
46 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
47 "|[-+*/<>%&^|=!]="
664d44ee 48 "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
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49PATTERNS("matlab",
50 "^[[:space:]]*((classdef|function)[[:space:]].*)$|^%%[[:space:]].*$",
51 "[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&"),
80c49c3d 52PATTERNS("objc",
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53 /* Negate C statements that can look like functions */
54 "!^[ \t]*(do|for|if|else|return|switch|while)\n"
55 /* Objective-C methods */
56 "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n"
57 /* C functions */
959e2e64 58 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n"
be58e70d 59 /* Objective-C class/protocol definitions */
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60 "^(@(implementation|interface|protocol)[ \t].*)$",
61 /* -- */
62 "[a-zA-Z_][a-zA-Z0-9_]*"
63 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
664d44ee 64 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
80c49c3d 65PATTERNS("pascal",
ad5b6942 66 "^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface|"
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67 "implementation|initialization|finalization)[ \t]*.*)$"
68 "\n"
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69 "^(.*=[ \t]*(class|record).*)$",
70 /* -- */
71 "[a-zA-Z_][a-zA-Z0-9_]*"
72 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
664d44ee 73 "|<>|<=|>=|:=|\\.\\."),
71a5d4bc 74PATTERNS("perl",
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75 "^package .*\n"
76 "^sub [[:alnum:]_':]+[ \t]*"
77 "(\\([^)]*\\)[ \t]*)?" /* prototype */
78 /*
79 * Attributes. A regex can't count nested parentheses,
80 * so just slurp up whatever we see, taking care not
81 * to accept lines like "sub foo; # defined elsewhere".
82 *
83 * An attribute could contain a semicolon, but at that
84 * point it seems reasonable enough to give up.
85 */
86 "(:[^;#]*)?"
87 "(\\{[ \t]*)?" /* brace can come here or on the next line */
88 "(#.*)?$\n" /* comment */
f143d9c6 89 "^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*"
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90 "(\\{[ \t]*)?" /* brace can come here or on the next line */
91 "(#.*)?$\n"
12f0967a 92 "^=head[0-9] .*", /* POD */
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93 /* -- */
94 "[[:alpha:]_'][[:alnum:]_']*"
95 "|0[xb]?[0-9a-fA-F_]*"
96 /* taking care not to interpret 3..5 as (3.)(.5) */
97 "|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?"
98 "|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::"
99 "|&&=|\\|\\|=|//=|\\*\\*="
100 "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?"
101 "|[-+*/%.^&<>=!|]="
102 "|=~|!~"
664d44ee 103 "|<<|<>|<=>|>>"),
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104PATTERNS("php",
105 "^[\t ]*(((public|protected|private|static)[\t ]+)*function.*)$\n"
106 "^[\t ]*(class.*)$",
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107 /* -- */
108 "[a-zA-Z_][a-zA-Z0-9_]*"
109 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
664d44ee 110 "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"),
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111PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$",
112 /* -- */
113 "[a-zA-Z_][a-zA-Z0-9_]*"
114 "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"
664d44ee 115 "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"),
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116 /* -- */
117PATTERNS("ruby", "^[ \t]*((class|module|def)[ \t].*)$",
118 /* -- */
119 "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"
120 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."
664d44ee 121 "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"),
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122PATTERNS("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
123 "[={}\"]|[^={}\" \t]+"),
124PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
664d44ee 125 "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+"),
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126PATTERNS("cpp",
127 /* Jump targets or access declarations */
128 "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:.*$\n"
129 /* C/++ functions/methods at top level */
37e7793d 130 "^([A-Za-z_][A-Za-z_0-9]*([ \t*]+[A-Za-z_][A-Za-z_0-9]*([ \t]*::[ \t]*[^[:space:]]+)?){1,}[ \t]*\\([^;]*)$\n"
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131 /* compound type at top level */
132 "^((struct|class|enum)[^;]*)$",
133 /* -- */
134 "[a-zA-Z_][a-zA-Z0-9_]*"
135 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
664d44ee 136 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
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PO
137PATTERNS("csharp",
138 /* Keywords */
139 "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n"
140 /* Methods and constructors */
141 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n"
142 /* Properties */
143 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n"
144 /* Type definitions */
145 "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n"
146 /* Namespace */
147 "^[ \t]*(namespace[ \t]+.*)$",
148 /* -- */
149 "[a-zA-Z_][a-zA-Z0-9_]*"
150 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
664d44ee 151 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
122aa6f9 152{ "default", NULL, -1, { NULL, 0 } },
be58e70d 153};
80c49c3d 154#undef PATTERNS
909a5494 155#undef IPATTERN
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156
157static struct userdiff_driver driver_true = {
158 "diff=true",
159 NULL,
122aa6f9 160 0,
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161 { NULL, 0 }
162};
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163
164static struct userdiff_driver driver_false = {
165 "!diff",
166 NULL,
122aa6f9 167 1,
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168 { NULL, 0 }
169};
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170
171static struct userdiff_driver *userdiff_find_by_namelen(const char *k, int len)
172{
173 int i;
174 for (i = 0; i < ndrivers; i++) {
175 struct userdiff_driver *drv = drivers + i;
176 if (!strncmp(drv->name, k, len) && !drv->name[len])
177 return drv;
178 }
179 for (i = 0; i < ARRAY_SIZE(builtin_drivers); i++) {
180 struct userdiff_driver *drv = builtin_drivers + i;
181 if (!strncmp(drv->name, k, len) && !drv->name[len])
182 return drv;
183 }
184 return NULL;
185}
186
187static struct userdiff_driver *parse_driver(const char *var,
188 const char *value, const char *type)
189{
190 struct userdiff_driver *drv;
d731f0ad 191 const char *name, *key;
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192 int namelen;
193
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194 if (parse_config_key(var, "diff", &name, &namelen, &key) < 0 ||
195 !name || strcmp(type, key))
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196 return NULL;
197
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198 drv = userdiff_find_by_namelen(name, namelen);
199 if (!drv) {
200 ALLOC_GROW(drivers, ndrivers+1, drivers_alloc);
201 drv = &drivers[ndrivers++];
202 memset(drv, 0, sizeof(*drv));
203 drv->name = xmemdupz(name, namelen);
122aa6f9 204 drv->binary = -1;
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205 }
206 return drv;
207}
208
209static int parse_funcname(struct userdiff_funcname *f, const char *k,
210 const char *v, int cflags)
211{
212 if (git_config_string(&f->pattern, k, v) < 0)
213 return -1;
214 f->cflags = cflags;
6680a087 215 return 0;
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216}
217
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218static int parse_tristate(int *b, const char *k, const char *v)
219{
220 if (v && !strcasecmp(v, "auto"))
221 *b = -1;
222 else
223 *b = git_config_bool(k, v);
6680a087 224 return 0;
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225}
226
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227static int parse_bool(int *b, const char *k, const char *v)
228{
229 *b = git_config_bool(k, v);
6680a087 230 return 0;
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231}
232
c7534ef4 233int userdiff_config(const char *k, const char *v)
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234{
235 struct userdiff_driver *drv;
236
237 if ((drv = parse_driver(k, v, "funcname")))
238 return parse_funcname(&drv->funcname, k, v, 0);
239 if ((drv = parse_driver(k, v, "xfuncname")))
240 return parse_funcname(&drv->funcname, k, v, REG_EXTENDED);
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241 if ((drv = parse_driver(k, v, "binary")))
242 return parse_tristate(&drv->binary, k, v);
be58e70d 243 if ((drv = parse_driver(k, v, "command")))
6680a087 244 return git_config_string(&drv->external, k, v);
9cb92c39 245 if ((drv = parse_driver(k, v, "textconv")))
6680a087 246 return git_config_string(&drv->textconv, k, v);
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247 if ((drv = parse_driver(k, v, "cachetextconv")))
248 return parse_bool(&drv->textconv_want_cache, k, v);
80c49c3d 249 if ((drv = parse_driver(k, v, "wordregex")))
6680a087 250 return git_config_string(&drv->word_regex, k, v);
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251
252 return 0;
253}
254
255struct userdiff_driver *userdiff_find_by_name(const char *name) {
256 int len = strlen(name);
257 return userdiff_find_by_namelen(name, len);
258}
259
260struct userdiff_driver *userdiff_find_by_path(const char *path)
261{
262 static struct git_attr *attr;
263 struct git_attr_check check;
264
265 if (!attr)
7fb0eaa2 266 attr = git_attr("diff");
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267 check.attr = attr;
268
269 if (!path)
270 return NULL;
d932f4eb 271 if (git_check_attr(path, 1, &check))
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272 return NULL;
273
274 if (ATTR_TRUE(check.value))
275 return &driver_true;
276 if (ATTR_FALSE(check.value))
277 return &driver_false;
278 if (ATTR_UNSET(check.value))
279 return NULL;
280 return userdiff_find_by_name(check.value);
281}
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282
283struct userdiff_driver *userdiff_get_textconv(struct userdiff_driver *driver)
284{
285 if (!driver->textconv)
286 return NULL;
287
288 if (driver->textconv_want_cache && !driver->textconv_cache) {
289 struct notes_cache *c = xmalloc(sizeof(*c));
290 struct strbuf name = STRBUF_INIT;
291
292 strbuf_addf(&name, "textconv/%s", driver->name);
293 notes_cache_init(c, name.buf, driver->textconv);
294 driver->textconv_cache = c;
295 }
296
297 return driver;
298}