| #include "cache.h" |
| #include "userdiff.h" |
| #include "cache.h" |
| #include "attr.h" |
| |
| static struct userdiff_driver *drivers; |
| static int ndrivers; |
| static int drivers_alloc; |
| |
| #define PATTERNS(name, pattern, word_regex) \ |
| { name, NULL, -1, { pattern, REG_EXTENDED }, \ |
| word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" } |
| #define IPATTERN(name, pattern, word_regex) \ |
| { name, NULL, -1, { pattern, REG_EXTENDED | REG_ICASE }, \ |
| word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" } |
| static struct userdiff_driver builtin_drivers[] = { |
| IPATTERN("fortran", |
| "!^([C*]|[ \t]*!)\n" |
| "!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n" |
| "^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA" |
| "|([^'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$", |
| /* -- */ |
| "[a-zA-Z][a-zA-Z0-9_]*" |
| "|\\.([Ee][Qq]|[Nn][Ee]|[Gg][TtEe]|[Ll][TtEe]|[Tt][Rr][Uu][Ee]|[Ff][Aa][Ll][Ss][Ee]|[Aa][Nn][Dd]|[Oo][Rr]|[Nn]?[Ee][Qq][Vv]|[Nn][Oo][Tt])\\." |
| /* numbers and format statements like 2E14.4, or ES12.6, 9X. |
| * Don't worry about format statements without leading digits since |
| * they would have been matched above as a variable anyway. */ |
| "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?" |
| "|//|\\*\\*|::|[/<>=]="), |
| PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$", |
| "[^<>= \t]+"), |
| PATTERNS("java", |
| "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n" |
| "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$", |
| /* -- */ |
| "[a-zA-Z_][a-zA-Z0-9_]*" |
| "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" |
| "|[-+*/<>%&^|=!]=" |
| "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"), |
| PATTERNS("objc", |
| /* Negate C statements that can look like functions */ |
| "!^[ \t]*(do|for|if|else|return|switch|while)\n" |
| /* Objective-C methods */ |
| "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\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)[\t ]+)*function.*)$\n" |
| "^[\t ]*(class.*)$", |
| /* -- */ |
| "[a-zA-Z_][a-zA-Z0-9_]*" |
| "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+" |
| "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"), |
| PATTERNS("python", "^[ \t]*((class|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("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$", |
| "[={}\"]|[^={}\" \t]+"), |
| PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$", |
| "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+"), |
| PATTERNS("cpp", |
| /* Jump targets or access declarations */ |
| "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:.*$\n" |
| /* C/++ functions/methods at top level */ |
| "^([A-Za-z_][A-Za-z_0-9]*([ \t]+[A-Za-z_][A-Za-z_0-9]*([ \t]*::[ \t]*[^[:space:]]+)?){1,}[ \t]*\\([^;]*)$\n" |
| /* compound type at top level */ |
| "^((struct|class|enum)[^;]*)$", |
| /* -- */ |
| "[a-zA-Z_][a-zA-Z0-9_]*" |
| "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" |
| "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"), |
| PATTERNS("csharp", |
| /* Keywords */ |
| "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n" |
| /* Methods and constructors */ |
| "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n" |
| /* Properties */ |
| "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n" |
| /* Type definitions */ |
| "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n" |
| /* Namespace */ |
| "^[ \t]*(namespace[ \t]+.*)$", |
| /* -- */ |
| "[a-zA-Z_][a-zA-Z0-9_]*" |
| "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" |
| "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"), |
| { "default", NULL, -1, { NULL, 0 } }, |
| }; |
| #undef PATTERNS |
| #undef IPATTERN |
| |
| static struct userdiff_driver driver_true = { |
| "diff=true", |
| NULL, |
| 0, |
| { NULL, 0 } |
| }; |
| |
| static struct userdiff_driver driver_false = { |
| "!diff", |
| NULL, |
| 1, |
| { NULL, 0 } |
| }; |
| |
| static struct userdiff_driver *userdiff_find_by_namelen(const char *k, int len) |
| { |
| int i; |
| for (i = 0; i < ndrivers; i++) { |
| struct userdiff_driver *drv = drivers + i; |
| if (!strncmp(drv->name, k, len) && !drv->name[len]) |
| return drv; |
| } |
| for (i = 0; i < ARRAY_SIZE(builtin_drivers); i++) { |
| struct userdiff_driver *drv = builtin_drivers + i; |
| if (!strncmp(drv->name, k, len) && !drv->name[len]) |
| return drv; |
| } |
| return NULL; |
| } |
| |
| static struct userdiff_driver *parse_driver(const char *var, |
| const char *value, const char *type) |
| { |
| struct userdiff_driver *drv; |
| const char *dot; |
| const char *name; |
| int namelen; |
| |
| if (prefixcmp(var, "diff.")) |
| return NULL; |
| dot = strrchr(var, '.'); |
| if (dot == var + 4) |
| return NULL; |
| if (strcmp(type, dot+1)) |
| return NULL; |
| |
| name = var + 5; |
| namelen = dot - name; |
| 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; |
| } |
| return drv; |
| } |
| |
| static int parse_funcname(struct userdiff_funcname *f, const char *k, |
| const char *v, int cflags) |
| { |
| if (git_config_string(&f->pattern, k, v) < 0) |
| return -1; |
| f->cflags = cflags; |
| return 1; |
| } |
| |
| static int parse_string(const char **d, const char *k, const char *v) |
| { |
| if (git_config_string(d, k, v) < 0) |
| return -1; |
| return 1; |
| } |
| |
| 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 1; |
| } |
| |
| static int parse_bool(int *b, const char *k, const char *v) |
| { |
| *b = git_config_bool(k, v); |
| return 1; |
| } |
| |
| int userdiff_config(const char *k, const char *v) |
| { |
| struct userdiff_driver *drv; |
| |
| if ((drv = parse_driver(k, v, "funcname"))) |
| return parse_funcname(&drv->funcname, k, v, 0); |
| if ((drv = parse_driver(k, v, "xfuncname"))) |
| return parse_funcname(&drv->funcname, k, v, REG_EXTENDED); |
| if ((drv = parse_driver(k, v, "binary"))) |
| return parse_tristate(&drv->binary, k, v); |
| if ((drv = parse_driver(k, v, "command"))) |
| return parse_string(&drv->external, k, v); |
| if ((drv = parse_driver(k, v, "textconv"))) |
| return parse_string(&drv->textconv, k, v); |
| if ((drv = parse_driver(k, v, "cachetextconv"))) |
| return parse_bool(&drv->textconv_want_cache, k, v); |
| if ((drv = parse_driver(k, v, "wordregex"))) |
| return parse_string(&drv->word_regex, k, v); |
| |
| return 0; |
| } |
| |
| struct userdiff_driver *userdiff_find_by_name(const char *name) { |
| int len = strlen(name); |
| return userdiff_find_by_namelen(name, len); |
| } |
| |
| struct userdiff_driver *userdiff_find_by_path(const char *path) |
| { |
| static struct git_attr *attr; |
| struct git_attr_check check; |
| |
| if (!attr) |
| attr = git_attr("diff"); |
| check.attr = attr; |
| |
| if (!path) |
| return NULL; |
| if (git_checkattr(path, 1, &check)) |
| return NULL; |
| |
| if (ATTR_TRUE(check.value)) |
| return &driver_true; |
| if (ATTR_FALSE(check.value)) |
| return &driver_false; |
| if (ATTR_UNSET(check.value)) |
| return NULL; |
| return userdiff_find_by_name(check.value); |
| } |
| |
| struct userdiff_driver *userdiff_get_textconv(struct userdiff_driver *driver) |
| { |
| if (!driver->textconv) |
| return NULL; |
| |
| if (driver->textconv_want_cache && !driver->textconv_cache) { |
| struct notes_cache *c = xmalloc(sizeof(*c)); |
| struct strbuf name = STRBUF_INIT; |
| |
| strbuf_addf(&name, "textconv/%s", driver->name); |
| notes_cache_init(c, name.buf, driver->textconv); |
| driver->textconv_cache = c; |
| } |
| |
| return driver; |
| } |