date: make DATE_MODE thread-safe
[git.git] / userdiff.c
blob92ef649c99ef49d1b21688584ad7d3bbbff6b737
1 #include "git-compat-util.h"
2 #include "config.h"
3 #include "userdiff.h"
4 #include "attr.h"
5 #include "strbuf.h"
6 #include "environment.h"
8 static struct userdiff_driver *drivers;
9 static int ndrivers;
10 static int drivers_alloc;
12 #define PATTERNS(lang, rx, wrx) { \
13 .name = lang, \
14 .binary = -1, \
15 .funcname = { \
16 .pattern = rx, \
17 .cflags = REG_EXTENDED, \
18 }, \
19 .word_regex = wrx "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+", \
20 .word_regex_multi_byte = wrx "|[^[:space:]]", \
22 #define IPATTERN(lang, rx, wrx) { \
23 .name = lang, \
24 .binary = -1, \
25 .funcname = { \
26 .pattern = rx, \
27 .cflags = REG_EXTENDED | REG_ICASE, \
28 }, \
29 .word_regex = wrx "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+", \
30 .word_regex_multi_byte = wrx "|[^[:space:]]", \
34 * Built-in drivers for various languages, sorted by their names
35 * (except that the "default" is left at the end).
37 * When writing or updating patterns, assume that the contents these
38 * patterns are applied to are syntactically correct. The patterns
39 * can be simple without implementing all syntactical corner cases, as
40 * long as they are sufficiently permissive.
42 static struct userdiff_driver builtin_drivers[] = {
43 IPATTERN("ada",
44 "!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n"
45 "!^[ \t]*with[ \t].*$\n"
46 "^[ \t]*((procedure|function)[ \t]+.*)$\n"
47 "^[ \t]*((package|protected|task)[ \t]+.*)$",
48 /* -- */
49 "[a-zA-Z][a-zA-Z0-9_]*"
50 "|[-+]?[0-9][0-9#_.aAbBcCdDeEfF]*([eE][+-]?[0-9_]+)?"
51 "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"),
52 PATTERNS("bash",
53 /* Optional leading indentation */
54 "^[ \t]*"
55 /* Start of captured text */
56 "("
57 "("
58 /* POSIX identifier with mandatory parentheses */
59 "[a-zA-Z_][a-zA-Z0-9_]*[ \t]*\\([ \t]*\\))"
60 "|"
61 /* Bashism identifier with optional parentheses */
62 "(function[ \t]+[a-zA-Z_][a-zA-Z0-9_]*(([ \t]*\\([ \t]*\\))|([ \t]+))"
63 ")"
64 /* Optional whitespace */
65 "[ \t]*"
66 /* Compound command starting with `{`, `(`, `((` or `[[` */
67 "(\\{|\\(\\(?|\\[\\[)"
68 /* End of captured text */
69 ")",
70 /* -- */
71 /* Characters not in the default $IFS value */
72 "[^ \t]+"),
73 PATTERNS("bibtex",
74 "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
75 /* -- */
76 "[={}\"]|[^={}\" \t]+"),
77 PATTERNS("cpp",
78 /* Jump targets or access declarations */
79 "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:[[:space:]]*($|/[/*])\n"
80 /* functions/methods, variables, and compounds at top level */
81 "^((::[[:space:]]*)?[A-Za-z_].*)$",
82 /* -- */
83 /* identifiers and keywords */
84 "[a-zA-Z_][a-zA-Z0-9_]*"
85 /* decimal and octal integers as well as floatingpoint numbers */
86 "|[0-9][0-9.]*([Ee][-+]?[0-9]+)?[fFlLuU]*"
87 /* hexadecimal and binary integers */
88 "|0[xXbB][0-9a-fA-F]+[lLuU]*"
89 /* floatingpoint numbers that begin with a decimal point */
90 "|\\.[0-9][0-9]*([Ee][-+]?[0-9]+)?[fFlL]?"
91 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*|<=>"),
92 PATTERNS("csharp",
93 /* Keywords */
94 "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n"
95 /* Methods and constructors */
96 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe|async)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n"
97 /* Properties */
98 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n"
99 /* Type definitions */
100 "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct|record)[ \t]+.*)$\n"
101 /* Namespace */
102 "^[ \t]*(namespace[ \t]+.*)$",
103 /* -- */
104 "[a-zA-Z_][a-zA-Z0-9_]*"
105 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
106 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
107 IPATTERN("css",
108 "![:;][[:space:]]*$\n"
109 "^[:[@.#]?[_a-z0-9].*$",
110 /* -- */
112 * This regex comes from W3C CSS specs. Should theoretically also
113 * allow ISO 10646 characters U+00A0 and higher,
114 * but they are not handled in this regex.
116 "-?[_a-zA-Z][-_a-zA-Z0-9]*" /* identifiers */
117 "|-?[0-9]+|\\#[0-9a-fA-F]+" /* numbers */
119 PATTERNS("dts",
120 "!;\n"
121 "!=\n"
122 /* lines beginning with a word optionally preceded by '&' or the root */
123 "^[ \t]*((/[ \t]*\\{|&?[a-zA-Z_]).*)",
124 /* -- */
125 /* Property names and math operators */
126 "[a-zA-Z0-9,._+?#-]+"
127 "|[-+*/%&^|!~]|>>|<<|&&|\\|\\|"),
128 PATTERNS("elixir",
129 "^[ \t]*((def(macro|module|impl|protocol|p)?|test)[ \t].*)$",
130 /* -- */
131 /* Atoms, names, and module attributes */
132 "[@:]?[a-zA-Z0-9@_?!]+"
133 /* Numbers with specific base */
134 "|[-+]?0[xob][0-9a-fA-F]+"
135 /* Numbers */
136 "|[-+]?[0-9][0-9_.]*([eE][-+]?[0-9_]+)?"
137 /* Operators and atoms that represent them */
138 "|:?(\\+\\+|--|\\.\\.|~~~|<>|\\^\\^\\^|<?\\|>|<<<?|>?>>|<<?~|~>?>|<~>|<=|>=|===?|!==?|=~|&&&?|\\|\\|\\|?|=>|<-|\\\\\\\\|->)"
139 /* Not real operators, but should be grouped */
140 "|:?%[A-Za-z0-9_.]\\{\\}?"),
141 IPATTERN("fortran",
142 /* Don't match comment lines */
143 "!^([C*]|[ \t]*!)\n"
144 /* Don't match 'module procedure' lines */
145 "!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n"
146 /* Program, module, block data */
147 "^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA"
148 /* Subroutines and functions */
149 "|([^!'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$",
150 /* -- */
151 "[a-zA-Z][a-zA-Z0-9_]*"
152 "|\\.([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])\\."
153 /* numbers and format statements like 2E14.4, or ES12.6, 9X.
154 * Don't worry about format statements without leading digits since
155 * they would have been matched above as a variable anyway. */
156 "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"
157 "|//|\\*\\*|::|[/<>=]="),
158 IPATTERN("fountain",
159 "^((\\.[^.]|(int|ext|est|int\\.?/ext|i/e)[. ]).*)$",
160 /* -- */
161 "[^ \t-]+"),
162 PATTERNS("golang",
163 /* Functions */
164 "^[ \t]*(func[ \t]*.*(\\{[ \t]*)?)\n"
165 /* Structs and interfaces */
166 "^[ \t]*(type[ \t].*(struct|interface)[ \t]*(\\{[ \t]*)?)",
167 /* -- */
168 "[a-zA-Z_][a-zA-Z0-9_]*"
169 "|[-+0-9.eE]+i?|0[xX]?[0-9a-fA-F]+i?"
170 "|[-+*/<>%&^|=!:]=|--|\\+\\+|<<=?|>>=?|&\\^=?|&&|\\|\\||<-|\\.{3}"),
171 PATTERNS("html",
172 "^[ \t]*(<[Hh][1-6]([ \t].*)?>.*)$",
173 /* -- */
174 "[^<>= \t]+"),
175 PATTERNS("java",
176 "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
177 /* Class, enum, interface, and record declarations */
178 "^[ \t]*(([a-z-]+[ \t]+)*(class|enum|interface|record)[ \t]+.*)$\n"
179 /* Method definitions; note that constructor signatures are not */
180 /* matched because they are indistinguishable from method calls. */
181 "^[ \t]*(([A-Za-z_<>&][][?&<>.,A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",
182 /* -- */
183 "[a-zA-Z_][a-zA-Z0-9_]*"
184 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
185 "|[-+*/<>%&^|=!]="
186 "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
187 PATTERNS("kotlin",
188 "^[ \t]*(([a-z]+[ \t]+)*(fun|class|interface)[ \t]+.*)$",
189 /* -- */
190 "[a-zA-Z_][a-zA-Z0-9_]*"
191 /* hexadecimal and binary numbers */
192 "|0[xXbB][0-9a-fA-F_]+[lLuU]*"
193 /* integers and floats */
194 "|[0-9][0-9_]*([.][0-9_]*)?([Ee][-+]?[0-9]+)?[fFlLuU]*"
195 /* floating point numbers beginning with decimal point */
196 "|[.][0-9][0-9_]*([Ee][-+]?[0-9]+)?[fFlLuU]?"
197 /* unary and binary operators */
198 "|[-+*/<>%&^|=!]==?|--|\\+\\+|<<=|>>=|&&|\\|\\||->|\\.\\*|!!|[?:.][.:]"),
199 PATTERNS("markdown",
200 "^ {0,3}#{1,6}[ \t].*",
201 /* -- */
202 "[^<>= \t]+"),
203 PATTERNS("matlab",
205 * Octave pattern is mostly the same as matlab, except that '%%%' and
206 * '##' can also be used to begin code sections, in addition to '%%'
207 * that is understood by both.
209 "^[[:space:]]*((classdef|function)[[:space:]].*)$|^(%%%?|##)[[:space:]].*$",
210 /* -- */
211 "[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&"),
212 PATTERNS("objc",
213 /* Negate C statements that can look like functions */
214 "!^[ \t]*(do|for|if|else|return|switch|while)\n"
215 /* Objective-C methods */
216 "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n"
217 /* C functions */
218 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n"
219 /* Objective-C class/protocol definitions */
220 "^(@(implementation|interface|protocol)[ \t].*)$",
221 /* -- */
222 "[a-zA-Z_][a-zA-Z0-9_]*"
223 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
224 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
225 PATTERNS("pascal",
226 "^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface"
227 "|implementation|initialization|finalization)[ \t]*.*)$\n"
228 "^(.*=[ \t]*(class|record).*)$",
229 /* -- */
230 "[a-zA-Z_][a-zA-Z0-9_]*"
231 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
232 "|<>|<=|>=|:=|\\.\\."),
233 PATTERNS("perl",
234 "^package .*\n"
235 "^sub [[:alnum:]_':]+[ \t]*"
236 "(\\([^)]*\\)[ \t]*)?" /* prototype */
238 * Attributes. A regex can't count nested parentheses,
239 * so just slurp up whatever we see, taking care not
240 * to accept lines like "sub foo; # defined elsewhere".
242 * An attribute could contain a semicolon, but at that
243 * point it seems reasonable enough to give up.
245 "(:[^;#]*)?"
246 "(\\{[ \t]*)?" /* brace can come here or on the next line */
247 "(#.*)?$\n" /* comment */
248 "^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*"
249 "(\\{[ \t]*)?" /* brace can come here or on the next line */
250 "(#.*)?$\n"
251 "^=head[0-9] .*", /* POD */
252 /* -- */
253 "[[:alpha:]_'][[:alnum:]_']*"
254 "|0[xb]?[0-9a-fA-F_]*"
255 /* taking care not to interpret 3..5 as (3.)(.5) */
256 "|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?"
257 "|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::"
258 "|&&=|\\|\\|=|//=|\\*\\*="
259 "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?"
260 "|[-+*/%.^&<>=!|]="
261 "|=~|!~"
262 "|<<|<>|<=>|>>"),
263 PATTERNS("php",
264 "^[\t ]*(((public|protected|private|static|abstract|final)[\t ]+)*function.*)$\n"
265 "^[\t ]*((((final|abstract)[\t ]+)?class|enum|interface|trait).*)$",
266 /* -- */
267 "[a-zA-Z_][a-zA-Z0-9_]*"
268 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
269 "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"),
270 PATTERNS("python",
271 "^[ \t]*((class|(async[ \t]+)?def)[ \t].*)$",
272 /* -- */
273 "[a-zA-Z_][a-zA-Z0-9_]*"
274 "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"
275 "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"),
276 /* -- */
277 PATTERNS("ruby",
278 "^[ \t]*((class|module|def)[ \t].*)$",
279 /* -- */
280 "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"
281 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."
282 "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"),
283 PATTERNS("rust",
284 "^[\t ]*((pub(\\([^\\)]+\\))?[\t ]+)?((async|const|unsafe|extern([\t ]+\"[^\"]+\"))[\t ]+)?(struct|enum|union|mod|trait|fn|impl|macro_rules!)[< \t]+[^;]*)$",
285 /* -- */
286 "[a-zA-Z_][a-zA-Z0-9_]*"
287 "|[0-9][0-9_a-fA-Fiosuxz]*(\\.([0-9]*[eE][+-]?)?[0-9_fF]*)?"
288 "|[-+*\\/<>%&^|=!:]=|<<=?|>>=?|&&|\\|\\||->|=>|\\.{2}=|\\.{3}|::"),
289 PATTERNS("scheme",
290 "^[\t ]*(\\(((define|def(struct|syntax|class|method|rules|record|proto|alias)?)[-*/ \t]|(library|module|struct|class)[*+ \t]).*)$",
292 * R7RS valid identifiers include any sequence enclosed
293 * within vertical lines having no backslashes
295 "\\|([^\\\\]*)\\|"
296 /* All other words should be delimited by spaces or parentheses */
297 "|([^][)(}{[ \t])+"),
298 PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
299 "\\\\[a-zA-Z@]+|\\\\.|([a-zA-Z0-9]|[^\x01-\x7f])+"),
300 { "default", NULL, NULL, -1, { NULL, 0 } },
302 #undef PATTERNS
303 #undef IPATTERN
305 static struct userdiff_driver driver_true = {
306 .name = "diff=true",
307 .binary = 0,
310 static struct userdiff_driver driver_false = {
311 .name = "!diff",
312 .binary = 1,
315 struct find_by_namelen_data {
316 const char *name;
317 size_t len;
318 struct userdiff_driver *driver;
321 static int userdiff_find_by_namelen_cb(struct userdiff_driver *driver,
322 enum userdiff_driver_type type UNUSED,
323 void *priv)
325 struct find_by_namelen_data *cb_data = priv;
327 if (!xstrncmpz(driver->name, cb_data->name, cb_data->len)) {
328 cb_data->driver = driver;
329 return 1; /* tell the caller to stop iterating */
331 return 0;
334 static int regexec_supports_multi_byte_chars(void)
336 static const char not_space[] = "[^[:space:]]";
337 static const char utf8_multi_byte_char[] = "\xc2\xa3";
338 regex_t re;
339 regmatch_t match;
340 static int result = -1;
342 if (result != -1)
343 return result;
344 if (regcomp(&re, not_space, REG_EXTENDED))
345 BUG("invalid regular expression: %s", not_space);
346 result = !regexec(&re, utf8_multi_byte_char, 1, &match, 0) &&
347 match.rm_so == 0 &&
348 match.rm_eo == strlen(utf8_multi_byte_char);
349 regfree(&re);
350 return result;
353 static struct userdiff_driver *userdiff_find_by_namelen(const char *name, size_t len)
355 struct find_by_namelen_data udcbdata = {
356 .name = name,
357 .len = len,
359 for_each_userdiff_driver(userdiff_find_by_namelen_cb, &udcbdata);
360 return udcbdata.driver;
363 static int parse_funcname(struct userdiff_funcname *f, const char *k,
364 const char *v, int cflags)
366 if (git_config_string(&f->pattern, k, v) < 0)
367 return -1;
368 f->cflags = cflags;
369 return 0;
372 static int parse_tristate(int *b, const char *k, const char *v)
374 if (v && !strcasecmp(v, "auto"))
375 *b = -1;
376 else
377 *b = git_config_bool(k, v);
378 return 0;
381 static int parse_bool(int *b, const char *k, const char *v)
383 *b = git_config_bool(k, v);
384 return 0;
387 int userdiff_config(const char *k, const char *v)
389 struct userdiff_driver *drv;
390 const char *name, *type;
391 size_t namelen;
393 if (parse_config_key(k, "diff", &name, &namelen, &type) || !name)
394 return 0;
396 drv = userdiff_find_by_namelen(name, namelen);
397 if (!drv) {
398 ALLOC_GROW(drivers, ndrivers+1, drivers_alloc);
399 drv = &drivers[ndrivers++];
400 memset(drv, 0, sizeof(*drv));
401 drv->name = xmemdupz(name, namelen);
402 drv->binary = -1;
405 if (!strcmp(type, "funcname"))
406 return parse_funcname(&drv->funcname, k, v, 0);
407 if (!strcmp(type, "xfuncname"))
408 return parse_funcname(&drv->funcname, k, v, REG_EXTENDED);
409 if (!strcmp(type, "binary"))
410 return parse_tristate(&drv->binary, k, v);
411 if (!strcmp(type, "command"))
412 return git_config_string(&drv->external, k, v);
413 if (!strcmp(type, "textconv"))
414 return git_config_string(&drv->textconv, k, v);
415 if (!strcmp(type, "cachetextconv"))
416 return parse_bool(&drv->textconv_want_cache, k, v);
417 if (!strcmp(type, "wordregex"))
418 return git_config_string(&drv->word_regex, k, v);
419 if (!strcmp(type, "algorithm"))
420 return git_config_string(&drv->algorithm, k, v);
422 return 0;
425 struct userdiff_driver *userdiff_find_by_name(const char *name)
427 int len = strlen(name);
428 struct userdiff_driver *driver = userdiff_find_by_namelen(name, len);
429 if (driver && driver->word_regex_multi_byte) {
430 if (regexec_supports_multi_byte_chars())
431 driver->word_regex = driver->word_regex_multi_byte;
432 driver->word_regex_multi_byte = NULL;
434 return driver;
437 struct userdiff_driver *userdiff_find_by_path(struct index_state *istate,
438 const char *path)
440 static struct attr_check *check;
442 if (!check)
443 check = attr_check_initl("diff", NULL);
444 if (!path)
445 return NULL;
446 git_check_attr(istate, path, check);
448 if (ATTR_TRUE(check->items[0].value))
449 return &driver_true;
450 if (ATTR_FALSE(check->items[0].value))
451 return &driver_false;
452 if (ATTR_UNSET(check->items[0].value))
453 return NULL;
454 return userdiff_find_by_name(check->items[0].value);
457 struct userdiff_driver *userdiff_get_textconv(struct repository *r,
458 struct userdiff_driver *driver)
460 if (!driver->textconv)
461 return NULL;
463 if (driver->textconv_want_cache && !driver->textconv_cache &&
464 have_git_dir()) {
465 struct notes_cache *c = xmalloc(sizeof(*c));
466 struct strbuf name = STRBUF_INIT;
468 strbuf_addf(&name, "textconv/%s", driver->name);
469 notes_cache_init(r, c, name.buf, driver->textconv);
470 driver->textconv_cache = c;
471 strbuf_release(&name);
474 return driver;
477 static int for_each_userdiff_driver_list(each_userdiff_driver_fn fn,
478 enum userdiff_driver_type type, void *cb_data,
479 struct userdiff_driver *drv,
480 int drv_size)
482 int i;
483 int ret;
484 for (i = 0; i < drv_size; i++) {
485 struct userdiff_driver *item = drv + i;
486 if ((ret = fn(item, type, cb_data)))
487 return ret;
489 return 0;
492 int for_each_userdiff_driver(each_userdiff_driver_fn fn, void *cb_data)
494 int ret;
496 ret = for_each_userdiff_driver_list(fn, USERDIFF_DRIVER_TYPE_CUSTOM,
497 cb_data, drivers, ndrivers);
498 if (ret)
499 return ret;
501 ret = for_each_userdiff_driver_list(fn, USERDIFF_DRIVER_TYPE_BUILTIN,
502 cb_data, builtin_drivers,
503 ARRAY_SIZE(builtin_drivers));
504 if (ret)
505 return ret;
507 return 0;