The userdiff.c has been rewritten to avoid hard-coded built-in driver patterns. Now we ship $(sharedir)/git-core/templates/userdiff that can be read using git_config_from_file() interface, using a very narrow callback function that understands only diff.*.xfuncname, diff.*.wordregex, and diff.*.regIcase.
Signed-off-by: Boxuan Li <libox...@connect.hku.hk> --- A few notes and questions: 1. In [diff "tex"] section, \x80 and \xff cannot be parsed by git config parser. I have no idea why this is happening. I changed them to \\x80 and \\xff as a workaround, which resulted in t4034 failure (See https://travis-ci.org/li-boxuan/git/jobs/546729906#L4679). 2. I am not sure how and where I can free the memory allocated to "builtin_drivers". 3. When I run `git format-patch HEAD~1`, core dump happens occasionally. Seems no test case caught this problem. Till now, I have no luck finding out the reason. Any hint or review would be appreciated. --- templates/this--userdiff | 164 ++++++++++++++++++++++ userdiff.c | 284 +++++++++++++++------------------------ 2 files changed, 275 insertions(+), 173 deletions(-) create mode 100644 templates/this--userdiff diff --git a/templates/this--userdiff b/templates/this--userdiff new file mode 100644 index 0000000000..85114a7229 --- /dev/null +++ b/templates/this--userdiff @@ -0,0 +1,164 @@ +[diff "ada"] + xfuncname = "!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n" + xfuncname = "!^[ \t]*with[ \t].*$\n" + xfuncname = "^[ \t]*((procedure|function)[ \t]+.*)$\n" + xfuncname = "^[ \t]*((package|protected|task)[ \t]+.*)$" + wordRegex = "[a-zA-Z][a-zA-Z0-9_]*" + wordRegex = "|[-+]?[0-9][0-9#_.aAbBcCdDeEfF]*([eE][+-]?[0-9_]+)?" + wordRegex = "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>" + regIcase = true + +[diff "fortran"] + xfuncname = "!^([C*]|[ \t]*!)\n" + xfuncname = "!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n" + xfuncname = "^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA" + xfuncname = "|([^'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$" + wordRegex = "[a-zA-Z][a-zA-Z0-9_]*" + wordRegex = "|\\.([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. + wordRegex = "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?" + wordRegex = "|//|\\*\\*|::|[/<>=]=" + regIcase = true + +[diff "fountain"] + xfuncname = "^((\\.[^.]|(int|ext|est|int\\.?/ext|i/e)[. ]).*)$" + wordRegex = "[^ \t-]+" + regIcase = true + +[diff "golang"] + ; Functions + xfuncname = "^[ \t]*(func[ \t]*.*(\\{[ \t]*)?)\n" + ; Structs and interfaces + xfuncname = "^[ \t]*(type[ \t].*(struct|interface)[ \t]*(\\{[ \t]*)?)" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.eE]+i?|0[xX]?[0-9a-fA-F]+i?" + wordRegex = "|[-+*/<>%&^|=!:]=|--|\\+\\+|<<=?|>>=?|&\\^=?|&&|\\|\\||<-|\\.{3}" + +[diff "html"] + xfuncname = "^[ \t]*(<[Hh][1-6]([ \t].*)?>.*)$" + wordRegex = "[^<>= \t]+" + +[diff "java"] + xfuncname = "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n" + xfuncname = "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" + wordRegex = "|[-+*/<>%&^|=!]=" + wordRegex = "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|" + +[diff "matlab"] + xfuncname = "^[[:space:]]*((classdef|function)[[:space:]].*)$|^%%[[:space:]].*$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&" + +[diff "objc"] + ; Negate C statements that can look like functions + xfuncname = "!^[ \t]*(do|for|if|else|return|switch|while)\n" + ; Objective-C methods + xfuncname = "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n" + ; C functions + xfuncname = "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n" + ; Objective-C class/protocol definitions + xfuncname = "^(@(implementation|interface|protocol)[ \t].*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" + wordRegex = "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->" + +[diff "pascal"] + xfuncname = "^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface|" + xfuncname = "implementation|initialization|finalization)[ \t]*.*)$" + xfuncname = "\n" + xfuncname = "^(.*=[ \t]*(class|record).*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+" + wordRegex = "|<>|<=|>=|:=|\\.\\." + +[diff "perl"] + xfuncname = "^package .*\n" + xfuncname = "^sub [[:alnum:]_':]+[ \t]*" + xfuncname = "(\\([^)]*\\)[ \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. + xfuncname = "(:[^;#]*)?" + xfuncname = "(\\{[ \t]*)?" ; brace can come here or on the next line + xfuncname = "(#.*)?$\n" ; comment + xfuncname = "^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*" + xfuncname = "(\\{[ \t]*)?" ; brace can come here or on the next line + xfuncname = "(#.*)?$\n" + xfuncname = "^=head[0-9] .*" ; POD + wordRegex = "[[:alpha:]_'][[:alnum:]_']*" + wordRegex = "|0[xb]?[0-9a-fA-F_]*" + ; taking care not to interpret 3..5 as (3.)(.5) + wordRegex = "|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?" + wordRegex = "|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::" + wordRegex = "|&&=|\\|\\|=|//=|\\*\\*=" + wordRegex = "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?" + wordRegex = "|[-+*/%.^&<>=!|]=" + wordRegex = "|=~|!~" + wordRegex = "|<<|<>|<=>|>>" + +[diff "php"] + xfuncname = "^[\t ]*(((public|protected|private|static)[\t ]+)*function.*)$\n" + xfuncname = "^[\t ]*((((final|abstract)[\t ]+)?class|interface|trait).*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+" + wordRegex = "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->" + +[diff "python"] + xfuncname = "^[ \t]*((class|def)[ \t].*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?" + wordRegex = "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?" + +[diff "ruby"] + xfuncname = "^[ \t]*((class|module|def)[ \t].*)$" + wordRegex = "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?." + wordRegex = "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~" + +[diff "bibtex"] + xfuncname = "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$" + wordRegex = "[={}\"]|[^={}\" \t]+" + +[diff "tex"] + xfuncname = "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$" + wordRegex = "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\\x80-\\xff]+" + +[diff "cpp"] + ; Jump targets or access declarations + xfuncname = "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:[[:space:]]*($|/[/*])\n" + ; functions/methods, variables, and compounds at top level + xfuncname = "^((::[[:space:]]*)?[A-Za-z_].*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lLuU]*" + wordRegex = "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*" + +[diff "csharp"] + ; Keywords + xfuncname = "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n" + ; Methods and constructors + xfuncname = "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe|async)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n" + ; Properties + xfuncname = "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n" + ; Type definitions + xfuncname = "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n" + ; Namespace + xfuncname = "^[ \t]*(namespace[ \t]+.*)$" + wordRegex = "[a-zA-Z_][a-zA-Z0-9_]*" + wordRegex = "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" + wordRegex = "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->" + +[diff "css"] + xfuncname = "![:;][[:space:]]*$\n" + xfuncname = "^[_a-z0-9].*$" + ; 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. + wordRegex = "-?[_a-zA-Z][-_a-zA-Z0-9]*" ; identifiers + wordRegex = "|-?[0-9]+|\\#[0-9a-fA-F]+" ; numbers + regIcase = true diff --git a/userdiff.c b/userdiff.c index 3a78fbf504..3e7052e13c 100644 --- a/userdiff.c +++ b/userdiff.c @@ -2,178 +2,121 @@ #include "config.h" #include "userdiff.h" #include "attr.h" +#include "exec-cmd.h" +#include "repository.h" static struct userdiff_driver *drivers; static int ndrivers; static int drivers_alloc; +static struct config_set gm_config; +static int config_init; +struct userdiff_driver *builtin_drivers; +static int builtin_drivers_size; -#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("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_]+)?" - "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"), -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].*)$", - /* -- */ - "[a-zA-Z][a-zA-Z0-9_]*" - "|\\.([Ee][Qq]|[Nn][Ee]|[Gg][TtEe]|[Ll][TtEe]|[Tt][Rr][Uu][Ee]|[Ff][Aa][Ll][Ss][Ee]|[Aa][Nn][Dd]|[Oo][Rr]|[Nn]?[Ee][Qq][Vv]|[Nn][Oo][Tt])\\." - /* numbers and format statements like 2E14.4, or ES12.6, 9X. - * Don't worry about format statements without leading digits since - * they would have been matched above as a variable anyway. */ - "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?" - "|//|\\*\\*|::|[/<>=]="), -IPATTERN("fountain", "^((\\.[^.]|(int|ext|est|int\\.?/ext|i/e)[. ]).*)$", - "[^ \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].*)?>.*)$", - "[^<>= \t]+"), -PATTERNS("java", - "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n" - "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$", - /* -- */ - "[a-zA-Z_][a-zA-Z0-9_]*" - "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" - "|[-+*/<>%&^|=!]=" - "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"), -PATTERNS("matlab", - "^[[: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 */ - "(#.*)?$\n" - "^=head[0-9] .*", /* POD */ - /* -- */ - "[[:alpha:]_'][[:alnum:]_']*" - "|0[xb]?[0-9a-fA-F_]*" - /* taking care not to interpret 3..5 as (3.)(.5) */ - "|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?" - "|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::" - "|&&=|\\|\\|=|//=|\\*\\*=" - "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?" - "|[-+*/%.^&<>=!|]=" - "|=~|!~" - "|<<|<>|<=>|>>"), -PATTERNS("php", - "^[\t ]*(((public|protected|private|static)[\t ]+)*function.*)$\n" - "^[\t ]*((((final|abstract)[\t ]+)?class|interface|trait).*)$", - /* -- */ - "[a-zA-Z_][a-zA-Z0-9_]*" - "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+" - "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"), -PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$", - /* -- */ - "[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]*:[[:space:]]*($|/[/*])\n" - /* functions/methods, variables, and compounds at top level */ - "^((::[[:space:]]*)?[A-Za-z_].*)$", - /* -- */ - "[a-zA-Z_][a-zA-Z0-9_]*" - "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lLuU]*" - "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*"), -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)[ \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 */ -), -{ "default", NULL, -1, { NULL, 0 } }, -}; -#undef PATTERNS -#undef IPATTERN +static int userdiff_config_init(void) +{ + int ret = -1; + if (!config_init) { + git_configset_init(&gm_config); + if (the_repository && the_repository->gitdir) + ret = git_configset_add_file(&gm_config, git_pathdup("userdiff")); + + // if .git/userdiff does not exist, set config_init to be -1 + if (ret == 0) + config_init = 1; + else + config_init = -1; + + builtin_drivers = (struct userdiff_driver *) malloc(sizeof(struct userdiff_driver)); + *builtin_drivers = (struct userdiff_driver) { "default", NULL, -1, { NULL, 0 } }; + builtin_drivers_size = 1; + } + return 0; +} + +static char* join_strings(const struct string_list *strings) +{ + char* str; + int i, len, length = 0; + if (!strings) + return NULL; + + for (i = 0; i < strings->nr; i++) + length += strlen(strings->items[i].string); + + str = (char *) malloc(length + 1); + length = 0; + + for (i = 0; i < strings->nr; i++) { + len = strlen(strings->items[i].string); + memcpy(str + length, strings->items[i].string, len); + length += len; + } + str[length] = '\0'; + return str; +} + +static struct userdiff_driver *userdiff_find_builtin_by_namelen(const char *k, int len) +{ + int i, key_length, word_regex_size, ret, reg_icase, cflags; + char *xfuncname_key, *word_regex_key, *ipattern_key; + char *xfuncname_value, *word_regex_value, *word_regex, *name; + struct userdiff_driver *builtin_driver; + char word_regex_extra[] = "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+"; + userdiff_config_init(); + name = (char *) malloc(len + 1); + memcpy(name, k, len); + name[len] = '\0'; + + // look up builtin_driver + for (i = 0; i < builtin_drivers_size; i++) { + struct userdiff_driver *drv = builtin_drivers + i; + if (!strncmp(drv->name, name, len) && !drv->name[len]) + return drv; + } + + // if .git/userdiff does not exist and name is not "default", return NULL + if (config_init == -1) { + return NULL; + } + + // load xfuncname and wordRegex from userdiff config file + key_length = len + 16; + xfuncname_key = (char *) malloc(key_length); + word_regex_key = (char *) malloc(key_length); + ipattern_key = (char *) malloc(key_length - 1); + snprintf(xfuncname_key, key_length, "diff.%s.xfuncname", name); + snprintf(word_regex_key, key_length, "diff.%s.wordRegex", name); + snprintf(ipattern_key, key_length - 1, "diff.%s.regIcase", name); + + xfuncname_value = join_strings(git_configset_get_value_multi(&gm_config, xfuncname_key)); + word_regex_value = join_strings(git_configset_get_value_multi(&gm_config, word_regex_key)); + + ret = git_configset_get_bool(&gm_config, ipattern_key, ®_icase); + // if "regIcase" is not found, do not use REG_ICASE flag + if (ret == 1) + reg_icase = 0; + cflags = reg_icase ? REG_EXTENDED | REG_ICASE : REG_EXTENDED; + + free(xfuncname_key); + free(word_regex_key); + free(ipattern_key); + + if (!xfuncname_value || !word_regex_value) + return NULL; + + word_regex_size = strlen(word_regex_value) + strlen(word_regex_extra) + 1; + word_regex = (char *) malloc(word_regex_size); + snprintf(word_regex, word_regex_size, + "%s%s", word_regex_value, word_regex_extra); + + builtin_drivers_size++; + builtin_drivers = realloc(builtin_drivers, builtin_drivers_size * sizeof(struct userdiff_driver)); + builtin_driver = builtin_drivers + builtin_drivers_size - 1; + *builtin_driver = (struct userdiff_driver) { + name, NULL, -1, { xfuncname_value, cflags }, word_regex }; + return builtin_driver; +} static struct userdiff_driver driver_true = { "diff=true", @@ -197,12 +140,7 @@ static struct userdiff_driver *userdiff_find_by_namelen(const char *k, int len) 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; + return userdiff_find_builtin_by_namelen(k, len); } static int parse_funcname(struct userdiff_funcname *f, const char *k, -- 2.21.0 (Apple Git-120)
