| #include "cache.h" |
| #include "config.h" |
| #include "userdiff.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]+" } |
| |
| /* |
| * 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", |
| /* 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|async)[ \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|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, and interface declarations */ |
| "^[ \t]*(([a-z]+[ \t]+)*(class|enum|interface)[ \t]+[A-Za-z][A-Za-z0-9_$]*[ \t]+.*)$\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]*\\([^;]*)$", |
| /* -- */ |
| "[a-zA-Z_][a-zA-Z0-9_]*" |
| "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" |
| "|[-+*/<>%&^|=!]=" |
| "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"), |
| PATTERNS("markdown", |
| "^ {0,3}#{1,6}[ \t].*", |
| /* -- */ |
| "[^<>= \t]+"), |
| PATTERNS("matlab", |
| /* |
| * Octave pattern is mostly the same as matlab, except that '%%%' and |
| * '##' can also be used to begin code sections, in addition to '%%' |
| * that is understood by both. |
| */ |
| "^[[:space:]]*((classdef|function)[[:space:]].*)$|^(%%%?|##)[[: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\x80-\xff]+"), |
| { "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 } |
| }; |
| |
| 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, void *priv) |
| { |
| struct find_by_namelen_data *cb_data = priv; |
| |
| if (!strncmp(driver->name, cb_data->name, cb_data->len) && |
| !driver->name[cb_data->len]) { |
| cb_data->driver = driver; |
| return 1; /* tell the caller to stop iterating */ |
| } |
| return 0; |
| } |
| |
| 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) |
| { |
| if (git_config_string(&f->pattern, k, v) < 0) |
| return -1; |
| 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")) |
| return git_config_string(&drv->external, k, v); |
| if (!strcmp(type, "textconv")) |
| return git_config_string(&drv->textconv, k, v); |
| if (!strcmp(type, "cachetextconv")) |
| return parse_bool(&drv->textconv_want_cache, k, v); |
| if (!strcmp(type, "wordregex")) |
| return git_config_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(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) { |
| 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; |
| } |