#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(lang, rx, wrx) { \ .name = lang, \ .binary = -1, \ .funcname = { \ .pattern = rx, \ .cflags = REG_EXTENDED, \ }, \ .word_regex = wrx "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+", \ } #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]+", \ } /* * 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, 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\x80-\xff]+"), { "default", NULL, -1, { NULL, 0 } }, }; #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 (!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, NULL, 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; }