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Commit | Line | Data |
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be58e70d JK |
1 | #include "userdiff.h" |
2 | #include "cache.h" | |
3 | #include "attr.h" | |
4 | ||
5 | static struct userdiff_driver *drivers; | |
6 | static int ndrivers; | |
7 | static int drivers_alloc; | |
8 | ||
ae3b970a BSSJ |
9 | #define PATTERNS(name, pattern, word_regex) \ |
10 | { name, NULL, -1, { pattern, REG_EXTENDED }, word_regex } | |
be58e70d | 11 | static struct userdiff_driver builtin_drivers[] = { |
80c49c3d TR |
12 | PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$", |
13 | "[^<>= \t]+|[^[:space:]]|[\x80-\xff]+"), | |
14 | PATTERNS("java", | |
be58e70d | 15 | "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n" |
959e2e64 PB |
16 | "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$", |
17 | /* -- */ | |
80c49c3d TR |
18 | "[a-zA-Z_][a-zA-Z0-9_]*" |
19 | "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" | |
20 | "|[-+*/<>%&^|=!]=" | |
21 | "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|" | |
22 | "|[^[:space:]]|[\x80-\xff]+"), | |
23 | PATTERNS("objc", | |
be58e70d JK |
24 | /* Negate C statements that can look like functions */ |
25 | "!^[ \t]*(do|for|if|else|return|switch|while)\n" | |
26 | /* Objective-C methods */ | |
27 | "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n" | |
28 | /* C functions */ | |
959e2e64 | 29 | "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n" |
be58e70d | 30 | /* Objective-C class/protocol definitions */ |
80c49c3d TR |
31 | "^(@(implementation|interface|protocol)[ \t].*)$", |
32 | /* -- */ | |
33 | "[a-zA-Z_][a-zA-Z0-9_]*" | |
34 | "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" | |
35 | "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->" | |
36 | "|[^[:space:]]|[\x80-\xff]+"), | |
37 | PATTERNS("pascal", | |
be58e70d JK |
38 | "^((procedure|function|constructor|destructor|interface|" |
39 | "implementation|initialization|finalization)[ \t]*.*)$" | |
40 | "\n" | |
80c49c3d TR |
41 | "^(.*=[ \t]*(class|record).*)$", |
42 | /* -- */ | |
43 | "[a-zA-Z_][a-zA-Z0-9_]*" | |
44 | "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+" | |
45 | "|<>|<=|>=|:=|\\.\\." | |
46 | "|[^[:space:]]|[\x80-\xff]+"), | |
47 | PATTERNS("php", "^[\t ]*((function|class).*)", | |
48 | /* -- */ | |
49 | "[a-zA-Z_][a-zA-Z0-9_]*" | |
50 | "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+" | |
51 | "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->" | |
52 | "|[^[:space:]]|[\x80-\xff]+"), | |
53 | PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$", | |
54 | /* -- */ | |
55 | "[a-zA-Z_][a-zA-Z0-9_]*" | |
56 | "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?" | |
57 | "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?" | |
58 | "|[^[:space:]|[\x80-\xff]+"), | |
59 | /* -- */ | |
60 | PATTERNS("ruby", "^[ \t]*((class|module|def)[ \t].*)$", | |
61 | /* -- */ | |
62 | "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*" | |
63 | "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?." | |
64 | "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~" | |
65 | "|[^[:space:]|[\x80-\xff]+"), | |
66 | PATTERNS("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$", | |
67 | "[={}\"]|[^={}\" \t]+"), | |
68 | PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$", | |
69 | "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+|[^[:space:]]"), | |
70 | PATTERNS("cpp", | |
71 | /* Jump targets or access declarations */ | |
72 | "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:.*$\n" | |
73 | /* C/++ functions/methods at top level */ | |
74 | "^([A-Za-z_][A-Za-z_0-9]*([ \t]+[A-Za-z_][A-Za-z_0-9]*([ \t]*::[ \t]*[^[:space:]]+)?){1,}[ \t]*\\([^;]*)$\n" | |
75 | /* compound type at top level */ | |
76 | "^((struct|class|enum)[^;]*)$", | |
77 | /* -- */ | |
78 | "[a-zA-Z_][a-zA-Z0-9_]*" | |
79 | "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" | |
80 | "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->" | |
81 | "|[^[:space:]]|[\x80-\xff]+"), | |
122aa6f9 | 82 | { "default", NULL, -1, { NULL, 0 } }, |
be58e70d | 83 | }; |
80c49c3d | 84 | #undef PATTERNS |
be58e70d JK |
85 | |
86 | static struct userdiff_driver driver_true = { | |
87 | "diff=true", | |
88 | NULL, | |
122aa6f9 | 89 | 0, |
be58e70d JK |
90 | { NULL, 0 } |
91 | }; | |
be58e70d JK |
92 | |
93 | static struct userdiff_driver driver_false = { | |
94 | "!diff", | |
95 | NULL, | |
122aa6f9 | 96 | 1, |
be58e70d JK |
97 | { NULL, 0 } |
98 | }; | |
be58e70d JK |
99 | |
100 | static struct userdiff_driver *userdiff_find_by_namelen(const char *k, int len) | |
101 | { | |
102 | int i; | |
103 | for (i = 0; i < ndrivers; i++) { | |
104 | struct userdiff_driver *drv = drivers + i; | |
105 | if (!strncmp(drv->name, k, len) && !drv->name[len]) | |
106 | return drv; | |
107 | } | |
108 | for (i = 0; i < ARRAY_SIZE(builtin_drivers); i++) { | |
109 | struct userdiff_driver *drv = builtin_drivers + i; | |
110 | if (!strncmp(drv->name, k, len) && !drv->name[len]) | |
111 | return drv; | |
112 | } | |
113 | return NULL; | |
114 | } | |
115 | ||
116 | static struct userdiff_driver *parse_driver(const char *var, | |
117 | const char *value, const char *type) | |
118 | { | |
119 | struct userdiff_driver *drv; | |
120 | const char *dot; | |
121 | const char *name; | |
122 | int namelen; | |
123 | ||
124 | if (prefixcmp(var, "diff.")) | |
125 | return NULL; | |
126 | dot = strrchr(var, '.'); | |
127 | if (dot == var + 4) | |
128 | return NULL; | |
129 | if (strcmp(type, dot+1)) | |
130 | return NULL; | |
131 | ||
132 | name = var + 5; | |
133 | namelen = dot - name; | |
134 | drv = userdiff_find_by_namelen(name, namelen); | |
135 | if (!drv) { | |
136 | ALLOC_GROW(drivers, ndrivers+1, drivers_alloc); | |
137 | drv = &drivers[ndrivers++]; | |
138 | memset(drv, 0, sizeof(*drv)); | |
139 | drv->name = xmemdupz(name, namelen); | |
122aa6f9 | 140 | drv->binary = -1; |
be58e70d JK |
141 | } |
142 | return drv; | |
143 | } | |
144 | ||
145 | static int parse_funcname(struct userdiff_funcname *f, const char *k, | |
146 | const char *v, int cflags) | |
147 | { | |
148 | if (git_config_string(&f->pattern, k, v) < 0) | |
149 | return -1; | |
150 | f->cflags = cflags; | |
151 | return 1; | |
152 | } | |
153 | ||
154 | static int parse_string(const char **d, const char *k, const char *v) | |
155 | { | |
156 | if (git_config_string(d, k, v) < 0) | |
157 | return -1; | |
158 | return 1; | |
159 | } | |
160 | ||
122aa6f9 JK |
161 | static int parse_tristate(int *b, const char *k, const char *v) |
162 | { | |
163 | if (v && !strcasecmp(v, "auto")) | |
164 | *b = -1; | |
165 | else | |
166 | *b = git_config_bool(k, v); | |
167 | return 1; | |
168 | } | |
169 | ||
c7534ef4 | 170 | int userdiff_config(const char *k, const char *v) |
be58e70d JK |
171 | { |
172 | struct userdiff_driver *drv; | |
173 | ||
174 | if ((drv = parse_driver(k, v, "funcname"))) | |
175 | return parse_funcname(&drv->funcname, k, v, 0); | |
176 | if ((drv = parse_driver(k, v, "xfuncname"))) | |
177 | return parse_funcname(&drv->funcname, k, v, REG_EXTENDED); | |
122aa6f9 JK |
178 | if ((drv = parse_driver(k, v, "binary"))) |
179 | return parse_tristate(&drv->binary, k, v); | |
be58e70d JK |
180 | if ((drv = parse_driver(k, v, "command"))) |
181 | return parse_string(&drv->external, k, v); | |
9cb92c39 JK |
182 | if ((drv = parse_driver(k, v, "textconv"))) |
183 | return parse_string(&drv->textconv, k, v); | |
80c49c3d TR |
184 | if ((drv = parse_driver(k, v, "wordregex"))) |
185 | return parse_string(&drv->word_regex, k, v); | |
be58e70d JK |
186 | |
187 | return 0; | |
188 | } | |
189 | ||
190 | struct userdiff_driver *userdiff_find_by_name(const char *name) { | |
191 | int len = strlen(name); | |
192 | return userdiff_find_by_namelen(name, len); | |
193 | } | |
194 | ||
195 | struct userdiff_driver *userdiff_find_by_path(const char *path) | |
196 | { | |
197 | static struct git_attr *attr; | |
198 | struct git_attr_check check; | |
199 | ||
200 | if (!attr) | |
201 | attr = git_attr("diff", 4); | |
202 | check.attr = attr; | |
203 | ||
204 | if (!path) | |
205 | return NULL; | |
206 | if (git_checkattr(path, 1, &check)) | |
207 | return NULL; | |
208 | ||
209 | if (ATTR_TRUE(check.value)) | |
210 | return &driver_true; | |
211 | if (ATTR_FALSE(check.value)) | |
212 | return &driver_false; | |
213 | if (ATTR_UNSET(check.value)) | |
214 | return NULL; | |
215 | return userdiff_find_by_name(check.value); | |
216 | } |