228 lines
6.3 KiB
C
228 lines
6.3 KiB
C
#include "cache.h"
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#include "userdiff.h"
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#include "cache.h"
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#include "attr.h"
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static struct userdiff_driver *drivers;
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static int ndrivers;
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static int drivers_alloc;
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#define PATTERNS(name, pattern, word_regex) \
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{ name, NULL, -1, { pattern, REG_EXTENDED }, word_regex }
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static struct userdiff_driver builtin_drivers[] = {
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PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$",
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"[^<>= \t]+|[^[:space:]]|[\x80-\xff]+"),
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PATTERNS("java",
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"!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
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"^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",
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/* -- */
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"[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
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"|[-+*/<>%&^|=!]="
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"|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"
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"|[^[:space:]]|[\x80-\xff]+"),
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PATTERNS("objc",
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/* Negate C statements that can look like functions */
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"!^[ \t]*(do|for|if|else|return|switch|while)\n"
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/* Objective-C methods */
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"^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n"
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/* C functions */
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"^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n"
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/* Objective-C class/protocol definitions */
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"^(@(implementation|interface|protocol)[ \t].*)$",
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/* -- */
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"[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
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"|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"
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"|[^[:space:]]|[\x80-\xff]+"),
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PATTERNS("pascal",
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"^((procedure|function|constructor|destructor|interface|"
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"implementation|initialization|finalization)[ \t]*.*)$"
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"\n"
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"^(.*=[ \t]*(class|record).*)$",
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/* -- */
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"[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
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"|<>|<=|>=|:=|\\.\\."
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"|[^[:space:]]|[\x80-\xff]+"),
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PATTERNS("php",
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"^[\t ]*(((public|protected|private|static)[\t ]+)*function.*)$\n"
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"^[\t ]*(class.*)$",
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/* -- */
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"[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
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"|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"
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"|[^[:space:]]|[\x80-\xff]+"),
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PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$",
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/* -- */
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"[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"
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"|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"
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"|[^[:space:]|[\x80-\xff]+"),
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/* -- */
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PATTERNS("ruby", "^[ \t]*((class|module|def)[ \t].*)$",
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/* -- */
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"(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."
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"|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"
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"|[^[:space:]|[\x80-\xff]+"),
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PATTERNS("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
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"[={}\"]|[^={}\" \t]+"),
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PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
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"\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+|[^[:space:]]"),
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PATTERNS("cpp",
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/* Jump targets or access declarations */
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"!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:.*$\n"
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/* C/++ functions/methods at top level */
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"^([A-Za-z_][A-Za-z_0-9]*([ \t]+[A-Za-z_][A-Za-z_0-9]*([ \t]*::[ \t]*[^[:space:]]+)?){1,}[ \t]*\\([^;]*)$\n"
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/* compound type at top level */
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"^((struct|class|enum)[^;]*)$",
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/* -- */
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"[a-zA-Z_][a-zA-Z0-9_]*"
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"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
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"|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"
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"|[^[:space:]]|[\x80-\xff]+"),
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{ "default", NULL, -1, { NULL, 0 } },
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};
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#undef PATTERNS
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static struct userdiff_driver driver_true = {
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"diff=true",
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NULL,
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0,
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{ NULL, 0 }
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};
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static struct userdiff_driver driver_false = {
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"!diff",
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NULL,
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1,
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{ NULL, 0 }
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};
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static struct userdiff_driver *userdiff_find_by_namelen(const char *k, int len)
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{
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int i;
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for (i = 0; i < ndrivers; i++) {
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struct userdiff_driver *drv = drivers + i;
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if (!strncmp(drv->name, k, len) && !drv->name[len])
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return drv;
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}
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for (i = 0; i < ARRAY_SIZE(builtin_drivers); i++) {
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struct userdiff_driver *drv = builtin_drivers + i;
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if (!strncmp(drv->name, k, len) && !drv->name[len])
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return drv;
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}
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return NULL;
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}
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static struct userdiff_driver *parse_driver(const char *var,
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const char *value, const char *type)
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{
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struct userdiff_driver *drv;
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const char *dot;
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const char *name;
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int namelen;
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if (prefixcmp(var, "diff."))
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return NULL;
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dot = strrchr(var, '.');
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if (dot == var + 4)
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return NULL;
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if (strcmp(type, dot+1))
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return NULL;
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name = var + 5;
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namelen = dot - name;
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drv = userdiff_find_by_namelen(name, namelen);
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if (!drv) {
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ALLOC_GROW(drivers, ndrivers+1, drivers_alloc);
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drv = &drivers[ndrivers++];
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memset(drv, 0, sizeof(*drv));
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drv->name = xmemdupz(name, namelen);
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drv->binary = -1;
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}
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return drv;
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}
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static int parse_funcname(struct userdiff_funcname *f, const char *k,
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const char *v, int cflags)
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{
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if (git_config_string(&f->pattern, k, v) < 0)
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return -1;
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f->cflags = cflags;
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return 1;
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}
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static int parse_string(const char **d, const char *k, const char *v)
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{
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if (git_config_string(d, k, v) < 0)
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return -1;
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return 1;
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}
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static int parse_tristate(int *b, const char *k, const char *v)
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{
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if (v && !strcasecmp(v, "auto"))
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*b = -1;
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else
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*b = git_config_bool(k, v);
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return 1;
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}
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static int parse_bool(int *b, const char *k, const char *v)
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{
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*b = git_config_bool(k, v);
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return 1;
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}
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int userdiff_config(const char *k, const char *v)
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{
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struct userdiff_driver *drv;
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if ((drv = parse_driver(k, v, "funcname")))
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return parse_funcname(&drv->funcname, k, v, 0);
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if ((drv = parse_driver(k, v, "xfuncname")))
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return parse_funcname(&drv->funcname, k, v, REG_EXTENDED);
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if ((drv = parse_driver(k, v, "binary")))
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return parse_tristate(&drv->binary, k, v);
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if ((drv = parse_driver(k, v, "command")))
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return parse_string(&drv->external, k, v);
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if ((drv = parse_driver(k, v, "textconv")))
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return parse_string(&drv->textconv, k, v);
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if ((drv = parse_driver(k, v, "cachetextconv")))
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return parse_bool(&drv->textconv_want_cache, k, v);
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if ((drv = parse_driver(k, v, "wordregex")))
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return parse_string(&drv->word_regex, k, v);
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return 0;
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}
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struct userdiff_driver *userdiff_find_by_name(const char *name) {
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int len = strlen(name);
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return userdiff_find_by_namelen(name, len);
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}
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struct userdiff_driver *userdiff_find_by_path(const char *path)
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{
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static struct git_attr *attr;
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struct git_attr_check check;
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if (!attr)
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attr = git_attr("diff");
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check.attr = attr;
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if (!path)
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return NULL;
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if (git_checkattr(path, 1, &check))
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return NULL;
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if (ATTR_TRUE(check.value))
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return &driver_true;
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if (ATTR_FALSE(check.value))
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return &driver_false;
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if (ATTR_UNSET(check.value))
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return NULL;
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return userdiff_find_by_name(check.value);
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}
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