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git/userdiff.c

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#include "git-compat-util.h"
#include "config.h"
#include "userdiff.h"
#include "attr.h"
#include "strbuf.h"
#include "environment.h"
static struct userdiff_driver *drivers;
static int ndrivers;
static int drivers_alloc;
#define PATTERNS(lang, rx, wrx) { \
.name = lang, \
.binary = -1, \
.funcname = { \
.pattern = rx, \
.cflags = REG_EXTENDED, \
}, \
.word_regex = wrx "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+", \
.word_regex_multi_byte = wrx "|[^[:space:]]", \
}
#define IPATTERN(lang, rx, wrx) { \
.name = lang, \
.binary = -1, \
.funcname = { \
.pattern = rx, \
.cflags = REG_EXTENDED | REG_ICASE, \
}, \
.word_regex = wrx "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+", \
.word_regex_multi_byte = wrx "|[^[:space:]]", \
}
/*
* Built-in drivers for various languages, sorted by their names
* (except that the "default" is left at the end).
*
* When writing or updating patterns, assume that the contents these
* patterns are applied to are syntactically correct. The patterns
* can be simple without implementing all syntactical corner cases, as
* long as they are sufficiently permissive.
*/
static struct userdiff_driver builtin_drivers[] = {
IPATTERN("ada",
"!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n"
"!^[ \t]*with[ \t].*$\n"
"^[ \t]*((procedure|function)[ \t]+.*)$\n"
"^[ \t]*((package|protected|task)[ \t]+.*)$",
/* -- */
"[a-zA-Z][a-zA-Z0-9_]*"
"|[-+]?[0-9][0-9#_.aAbBcCdDeEfF]*([eE][+-]?[0-9_]+)?"
"|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"),
PATTERNS("bash",
/* Optional leading indentation */
"^[ \t]*"
/* Start of captured text */
"("
"("
/* POSIX identifier with mandatory parentheses */
"[a-zA-Z_][a-zA-Z0-9_]*[ \t]*\\([ \t]*\\))"
"|"
/* Bashism identifier with optional parentheses */
"(function[ \t]+[a-zA-Z_][a-zA-Z0-9_]*(([ \t]*\\([ \t]*\\))|([ \t]+))"
")"
/* Optional whitespace */
"[ \t]*"
/* Compound command starting with `{`, `(`, `((` or `[[` */
"(\\{|\\(\\(?|\\[\\[)"
/* End of captured text */
")",
/* -- */
/* Characters not in the default $IFS value */
"[^ \t]+"),
PATTERNS("bibtex",
"(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
/* -- */
"[={}\"]|[^={}\" \t]+"),
PATTERNS("cpp",
/* Jump targets or access declarations */
"!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:[[:space:]]*($|/[/*])\n"
/* functions/methods, variables, and compounds at top level */
"^((::[[:space:]]*)?[A-Za-z_].*)$",
/* -- */
/* identifiers and keywords */
"[a-zA-Z_][a-zA-Z0-9_]*"
/* decimal and octal integers as well as floatingpoint numbers */
"|[0-9][0-9.]*([Ee][-+]?[0-9]+)?[fFlLuU]*"
/* hexadecimal and binary integers */
"|0[xXbB][0-9a-fA-F]+[lLuU]*"
/* floatingpoint numbers that begin with a decimal point */
"|\\.[0-9][0-9]*([Ee][-+]?[0-9]+)?[fFlL]?"
"|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*|<=>"),
PATTERNS("csharp",
/*
* Jump over reserved keywords which are illegal method names, but which
* can be followed by parentheses without special characters in between,
* making them look like methods.
*/
"!(^|[ \t]+)" /* Start of line or whitespace. */
"(do|while|for|foreach|if|else|new|default|return|switch|case|throw"
"|catch|using|lock|fixed)"
"([ \t(]+|$)\n" /* Whitespace, "(", or end of line. */
/*
* Methods/constructors:
* The strategy is to identify a minimum of two groups (any combination
* of keywords/type/name) before the opening parenthesis, and without
* final unexpected characters, normally only used in ordinary statements.
*/
"^[ \t]*" /* Remove leading whitespace. */
"(" /* Start chunk header capture. */
"(" /* First group. */
"[][[:alnum:]@_.]" /* Name. */
"(<[][[:alnum:]@_, \t<>]+>)?" /* Optional generic parameters. */
")+"
"([ \t]+" /* Subsequent groups, prepended with space. */
"([][[:alnum:]@_.](<[][[:alnum:]@_, \t<>]+>)?)+"
")+"
"[ \t]*" /* Optional space before parameters start. */
"\\(" /* Start of method parameters. */
"[^;]*" /* Allow complex parameters, but exclude statements (;). */
")$\n" /* Close chunk header capture. */
/*
* Properties:
* As with methods, expect a minimum of two groups. But, more trivial than
* methods, the vast majority of properties long enough to be worth
* showing a chunk header for don't include "=:;,()" on the line they are
* defined, since they don't have a parameter list.
*/
"^[ \t]*("
"([][[:alnum:]@_.](<[][[:alnum:]@_, \t<>]+>)?)+"
"([ \t]+"
"([][[:alnum:]@_.](<[][[:alnum:]@_, \t<>]+>)?)+"
")+" /* Up to here, same as methods regex. */
"[^;=:,()]*" /* Compared to methods, no parameter list allowed. */
")$\n"
/* Type definitions */
"^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct|record)[ \t]+.*)$\n"
/* Namespace */
"^[ \t]*(namespace[ \t]+.*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
"|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
IPATTERN("css",
"![:;][[:space:]]*$\n"
"^[:[@.#]?[_a-z0-9].*$",
/* -- */
/*
* This regex comes from W3C CSS specs. Should theoretically also
* allow ISO 10646 characters U+00A0 and higher,
* but they are not handled in this regex.
*/
"-?[_a-zA-Z][-_a-zA-Z0-9]*" /* identifiers */
"|-?[0-9]+|\\#[0-9a-fA-F]+" /* numbers */
),
PATTERNS("dts",
"!;\n"
"!=\n"
/* lines beginning with a word optionally preceded by '&' or the root */
"^[ \t]*((/[ \t]*\\{|&?[a-zA-Z_]).*)",
/* -- */
/* Property names and math operators */
"[a-zA-Z0-9,._+?#-]+"
"|[-+*/%&^|!~]|>>|<<|&&|\\|\\|"),
PATTERNS("elixir",
"^[ \t]*((def(macro|module|impl|protocol|p)?|test)[ \t].*)$",
/* -- */
/* Atoms, names, and module attributes */
"[@:]?[a-zA-Z0-9@_?!]+"
/* Numbers with specific base */
"|[-+]?0[xob][0-9a-fA-F]+"
/* Numbers */
"|[-+]?[0-9][0-9_.]*([eE][-+]?[0-9_]+)?"
/* Operators and atoms that represent them */
"|:?(\\+\\+|--|\\.\\.|~~~|<>|\\^\\^\\^|<?\\|>|<<<?|>?>>|<<?~|~>?>|<~>|<=|>=|===?|!==?|=~|&&&?|\\|\\|\\|?|=>|<-|\\\\\\\\|->)"
/* Not real operators, but should be grouped */
"|:?%[A-Za-z0-9_.]\\{\\}?"),
IPATTERN("fortran",
/* Don't match comment lines */
"!^([C*]|[ \t]*!)\n"
/* Don't match 'module procedure' lines */
"!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n"
/* Program, module, block data */
"^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA"
/* Subroutines and functions */
"|([^!'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$",
/* -- */
"[a-zA-Z][a-zA-Z0-9_]*"
"|\\.([Ee][Qq]|[Nn][Ee]|[Gg][TtEe]|[Ll][TtEe]|[Tt][Rr][Uu][Ee]|[Ff][Aa][Ll][Ss][Ee]|[Aa][Nn][Dd]|[Oo][Rr]|[Nn]?[Ee][Qq][Vv]|[Nn][Oo][Tt])\\."
/* numbers and format statements like 2E14.4, or ES12.6, 9X.
* Don't worry about format statements without leading digits since
* they would have been matched above as a variable anyway. */
"|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"
"|//|\\*\\*|::|[/<>=]="),
IPATTERN("fountain",
"^((\\.[^.]|(int|ext|est|int\\.?/ext|i/e)[. ]).*)$",
/* -- */
"[^ \t-]+"),
PATTERNS("golang",
/* Functions */
"^[ \t]*(func[ \t]*.*(\\{[ \t]*)?)\n"
/* Structs and interfaces */
"^[ \t]*(type[ \t].*(struct|interface)[ \t]*(\\{[ \t]*)?)",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.eE]+i?|0[xX]?[0-9a-fA-F]+i?"
"|[-+*/<>%&^|=!:]=|--|\\+\\+|<<=?|>>=?|&\\^=?|&&|\\|\\||<-|\\.{3}"),
PATTERNS("html",
"^[ \t]*(<[Hh][1-6]([ \t].*)?>.*)$",
/* -- */
"[^<>= \t]+"),
PATTERNS("java",
"!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
/* Class, enum, interface, and record declarations */
"^[ \t]*(([a-z-]+[ \t]+)*(class|enum|interface|record)[ \t]+.*)$\n"
/* Method definitions; note that constructor signatures are not */
/* matched because they are indistinguishable from method calls. */
"^[ \t]*(([A-Za-z_<>&][][?&<>.,A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
"|[-+*/<>%&^|=!]="
"|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
PATTERNS("kotlin",
"^[ \t]*(([a-z]+[ \t]+)*(fun|class|interface)[ \t]+.*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
/* hexadecimal and binary numbers */
"|0[xXbB][0-9a-fA-F_]+[lLuU]*"
/* integers and floats */
"|[0-9][0-9_]*([.][0-9_]*)?([Ee][-+]?[0-9]+)?[fFlLuU]*"
/* floating point numbers beginning with decimal point */
"|[.][0-9][0-9_]*([Ee][-+]?[0-9]+)?[fFlLuU]?"
/* unary and binary operators */
"|[-+*/<>%&^|=!]==?|--|\\+\\+|<<=|>>=|&&|\\|\\||->|\\.\\*|!!|[?:.][.:]"),
PATTERNS("markdown",
"^ {0,3}#{1,6}[ \t].*",
/* -- */
"[^<>= \t]+"),
PATTERNS("matlab",
/*
* Octave pattern is mostly the same as matlab, except that '%%%' and
* '##' can also be used to begin code sections, in addition to '%%'
* that is understood by both.
*/
"^[[:space:]]*((classdef|function)[[:space:]].*)$|^(%%%?|##)[[:space:]].*$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&"),
PATTERNS("objc",
/* Negate C statements that can look like functions */
"!^[ \t]*(do|for|if|else|return|switch|while)\n"
/* Objective-C methods */
"^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n"
/* C functions */
"^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n"
/* Objective-C class/protocol definitions */
"^(@(implementation|interface|protocol)[ \t].*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
"|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
PATTERNS("pascal",
"^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface"
"|implementation|initialization|finalization)[ \t]*.*)$\n"
"^(.*=[ \t]*(class|record).*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
"|<>|<=|>=|:=|\\.\\."),
PATTERNS("perl",
"^package .*\n"
"^sub [[:alnum:]_':]+[ \t]*"
"(\\([^)]*\\)[ \t]*)?" /* prototype */
/*
* Attributes. A regex can't count nested parentheses,
* so just slurp up whatever we see, taking care not
* to accept lines like "sub foo; # defined elsewhere".
*
* An attribute could contain a semicolon, but at that
* point it seems reasonable enough to give up.
*/
"(:[^;#]*)?"
"(\\{[ \t]*)?" /* brace can come here or on the next line */
"(#.*)?$\n" /* comment */
"^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*"
"(\\{[ \t]*)?" /* brace can come here or on the next line */
"(#.*)?$\n"
"^=head[0-9] .*", /* POD */
/* -- */
"[[:alpha:]_'][[:alnum:]_']*"
"|0[xb]?[0-9a-fA-F_]*"
/* taking care not to interpret 3..5 as (3.)(.5) */
"|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?"
"|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::"
"|&&=|\\|\\|=|//=|\\*\\*="
"|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?"
"|[-+*/%.^&<>=!|]="
"|=~|!~"
"|<<|<>|<=>|>>"),
PATTERNS("php",
"^[\t ]*(((public|protected|private|static|abstract|final)[\t ]+)*function.*)$\n"
"^[\t ]*((((final|abstract)[\t ]+)?class|enum|interface|trait).*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
"|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"),
PATTERNS("python",
"^[ \t]*((class|(async[ \t]+)?def)[ \t].*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"
"|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"),
/* -- */
PATTERNS("ruby",
"^[ \t]*((class|module|def)[ \t].*)$",
/* -- */
"(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"
"|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."
"|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"),
PATTERNS("rust",
"^[\t ]*((pub(\\([^\\)]+\\))?[\t ]+)?((async|const|unsafe|extern([\t ]+\"[^\"]+\"))[\t ]+)?(struct|enum|union|mod|trait|fn|impl|macro_rules!)[< \t]+[^;]*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
"|[0-9][0-9_a-fA-Fiosuxz]*(\\.([0-9]*[eE][+-]?)?[0-9_fF]*)?"
"|[-+*\\/<>%&^|=!:]=|<<=?|>>=?|&&|\\|\\||->|=>|\\.{2}=|\\.{3}|::"),
PATTERNS("scheme",
"^[\t ]*(\\(((define|def(struct|syntax|class|method|rules|record|proto|alias)?)[-*/ \t]|(library|module|struct|class)[*+ \t]).*)$",
/*
* R7RS valid identifiers include any sequence enclosed
* within vertical lines having no backslashes
*/
"\\|([^\\\\]*)\\|"
/* All other words should be delimited by spaces or parentheses */
"|([^][)(}{[ \t])+"),
PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
"\\\\[a-zA-Z@]+|\\\\.|([a-zA-Z0-9]|[^\x01-\x7f])+"),
{ .name = "default", .binary = -1 },
};
#undef PATTERNS
#undef IPATTERN
static struct userdiff_driver driver_true = {
.name = "diff=true",
.binary = 0,
};
static struct userdiff_driver driver_false = {
.name = "!diff",
.binary = 1,
};
struct find_by_namelen_data {
const char *name;
size_t len;
struct userdiff_driver *driver;
};
static int userdiff_find_by_namelen_cb(struct userdiff_driver *driver,
enum userdiff_driver_type type UNUSED,
void *priv)
{
struct find_by_namelen_data *cb_data = priv;
if (!xstrncmpz(driver->name, cb_data->name, cb_data->len)) {
cb_data->driver = driver;
return 1; /* tell the caller to stop iterating */
}
return 0;
}
static int regexec_supports_multi_byte_chars(void)
{
static const char not_space[] = "[^[:space:]]";
static const char utf8_multi_byte_char[] = "\xc2\xa3";
regex_t re;
regmatch_t match;
static int result = -1;
if (result != -1)
return result;
if (regcomp(&re, not_space, REG_EXTENDED))
BUG("invalid regular expression: %s", not_space);
result = !regexec(&re, utf8_multi_byte_char, 1, &match, 0) &&
match.rm_so == 0 &&
match.rm_eo == strlen(utf8_multi_byte_char);
regfree(&re);
return result;
}
static struct userdiff_driver *userdiff_find_by_namelen(const char *name, size_t len)
{
struct find_by_namelen_data udcbdata = {
.name = name,
.len = len,
};
for_each_userdiff_driver(userdiff_find_by_namelen_cb, &udcbdata);
return udcbdata.driver;
}
static int parse_funcname(struct userdiff_funcname *f, const char *k,
const char *v, int cflags)
{
f->pattern = NULL;
FREE_AND_NULL(f->pattern_owned);
if (git_config_string(&f->pattern_owned, k, v) < 0)
return -1;
f->pattern = f->pattern_owned;
f->cflags = cflags;
return 0;
}
static int parse_tristate(int *b, const char *k, const char *v)
{
if (v && !strcasecmp(v, "auto"))
*b = -1;
else
*b = git_config_bool(k, v);
return 0;
}
static int parse_bool(int *b, const char *k, const char *v)
{
*b = git_config_bool(k, v);
return 0;
}
int userdiff_config(const char *k, const char *v)
{
struct userdiff_driver *drv;
const char *name, *type;
size_t namelen;
if (parse_config_key(k, "diff", &name, &namelen, &type) || !name)
return 0;
drv = userdiff_find_by_namelen(name, namelen);
if (!drv) {
ALLOC_GROW(drivers, ndrivers+1, drivers_alloc);
drv = &drivers[ndrivers++];
memset(drv, 0, sizeof(*drv));
drv->name = xmemdupz(name, namelen);
drv->binary = -1;
}
if (!strcmp(type, "funcname"))
return parse_funcname(&drv->funcname, k, v, 0);
if (!strcmp(type, "xfuncname"))
return parse_funcname(&drv->funcname, k, v, REG_EXTENDED);
if (!strcmp(type, "binary"))
return parse_tristate(&drv->binary, k, v);
if (!strcmp(type, "command")) {
FREE_AND_NULL(drv->external.cmd);
return git_config_string(&drv->external.cmd, k, v);
}
if (!strcmp(type, "trustexitcode")) {
drv->external.trust_exit_code = git_config_bool(k, v);
return 0;
}
if (!strcmp(type, "textconv")) {
int ret;
FREE_AND_NULL(drv->textconv_owned);
ret = git_config_string(&drv->textconv_owned, k, v);
drv->textconv = drv->textconv_owned;
return ret;
}
if (!strcmp(type, "cachetextconv"))
return parse_bool(&drv->textconv_want_cache, k, v);
if (!strcmp(type, "wordregex")) {
int ret;
FREE_AND_NULL(drv->word_regex_owned);
ret = git_config_string(&drv->word_regex_owned, k, v);
drv->word_regex = drv->word_regex_owned;
return ret;
}
if (!strcmp(type, "algorithm")) {
int ret;
FREE_AND_NULL(drv->algorithm_owned);
ret = git_config_string(&drv->algorithm_owned, k, v);
drv->algorithm = drv->algorithm_owned;
return ret;
}
return 0;
}
struct userdiff_driver *userdiff_find_by_name(const char *name)
{
int len = strlen(name);
struct userdiff_driver *driver = userdiff_find_by_namelen(name, len);
if (driver && driver->word_regex_multi_byte) {
if (regexec_supports_multi_byte_chars())
driver->word_regex = driver->word_regex_multi_byte;
driver->word_regex_multi_byte = NULL;
}
return driver;
}
struct userdiff_driver *userdiff_find_by_path(struct index_state *istate,
const char *path)
{
static struct attr_check *check;
if (!check)
check = attr_check_initl("diff", NULL);
if (!path)
return NULL;
git_check_attr(istate, path, check);
if (ATTR_TRUE(check->items[0].value))
return &driver_true;
if (ATTR_FALSE(check->items[0].value))
return &driver_false;
if (ATTR_UNSET(check->items[0].value))
return NULL;
return userdiff_find_by_name(check->items[0].value);
}
struct userdiff_driver *userdiff_get_textconv(struct repository *r,
struct userdiff_driver *driver)
{
if (!driver->textconv)
return NULL;
if (driver->textconv_want_cache && !driver->textconv_cache &&
have_git_dir()) {
struct notes_cache *c = xmalloc(sizeof(*c));
struct strbuf name = STRBUF_INIT;
strbuf_addf(&name, "textconv/%s", driver->name);
notes_cache_init(r, c, name.buf, driver->textconv);
driver->textconv_cache = c;
strbuf_release(&name);
}
return driver;
}
static int for_each_userdiff_driver_list(each_userdiff_driver_fn fn,
enum userdiff_driver_type type, void *cb_data,
struct userdiff_driver *drv,
int drv_size)
{
int i;
int ret;
for (i = 0; i < drv_size; i++) {
struct userdiff_driver *item = drv + i;
if ((ret = fn(item, type, cb_data)))
return ret;
}
return 0;
}
int for_each_userdiff_driver(each_userdiff_driver_fn fn, void *cb_data)
{
int ret;
ret = for_each_userdiff_driver_list(fn, USERDIFF_DRIVER_TYPE_CUSTOM,
cb_data, drivers, ndrivers);
if (ret)
return ret;
ret = for_each_userdiff_driver_list(fn, USERDIFF_DRIVER_TYPE_BUILTIN,
cb_data, builtin_drivers,
ARRAY_SIZE(builtin_drivers));
if (ret)
return ret;
return 0;
}
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