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Abstract out the "name <email> date" handling of commit-tree.c
We'll want to use it for the tagging too.
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Linus Torvalds
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Jul 12, 2005
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| /* | ||
| * ident.c | ||
| * | ||
| * create git identifier lines of the form "name <email> date" | ||
| * | ||
| * Copyright (C) 2005 Linus Torvalds | ||
| */ | ||
| #include "cache.h" | ||
|
|
||
| #include <pwd.h> | ||
| #include <time.h> | ||
| #include <ctype.h> | ||
|
|
||
| static char real_email[1000]; | ||
| static char real_name[1000]; | ||
| static char real_date[50]; | ||
|
|
||
| int setup_ident(void) | ||
| { | ||
| int len; | ||
| struct passwd *pw = getpwuid(getuid()); | ||
|
|
||
| if (!pw) | ||
| die("You don't exist. Go away!"); | ||
|
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||
| /* Get the name ("gecos") */ | ||
| len = strlen(pw->pw_gecos); | ||
| if (len >= sizeof(real_name)) | ||
| die("Your parents must have hated you"); | ||
| memcpy(real_name, pw->pw_gecos, len+1); | ||
|
|
||
| /* Make up a fake email address (name + '@' + hostname [+ '.' + domainname]) */ | ||
| len = strlen(pw->pw_name); | ||
| if (len > sizeof(real_email)/2) | ||
| die("Your parents must have hated you"); | ||
| memcpy(real_email, pw->pw_name, len); | ||
| real_email[len++] = '@'; | ||
| gethostname(real_email + len, sizeof(real_email) - len); | ||
| if (!strchr(real_email+len, '.')) { | ||
| len = strlen(real_email); | ||
| real_email[len++] = '.'; | ||
| getdomainname(real_email+len, sizeof(real_email)-len); | ||
| } | ||
|
|
||
| /* And set the default date */ | ||
| datestamp(real_date, sizeof(real_date)); | ||
| return 0; | ||
| } | ||
|
|
||
| static int add_raw(char *buf, int size, int offset, const char *str) | ||
| { | ||
| int len = strlen(str); | ||
| if (offset + len > size) | ||
| return size; | ||
| memcpy(buf + offset, str, len); | ||
| return offset + len; | ||
| } | ||
|
|
||
| static int crud(unsigned char c) | ||
| { | ||
| static const char crud_array[256] = { | ||
| [0 ... 31] = 1, | ||
| [' '] = 1, | ||
| ['.'] = 1, [','] = 1, | ||
| [':'] = 1, [';'] = 1, | ||
| ['<'] = 1, ['>'] = 1, | ||
| ['"'] = 1, ['\''] = 1, | ||
| }; | ||
| return crud_array[c]; | ||
| } | ||
|
|
||
| /* | ||
| * Copy over a string to the destination, but avoid special | ||
| * characters ('\n', '<' and '>') and remove crud at the end | ||
| */ | ||
| static int copy(char *buf, int size, int offset, const char *src) | ||
| { | ||
| int i, len; | ||
| unsigned char c; | ||
|
|
||
| /* Remove crud from the beginning.. */ | ||
| while ((c = *src) != 0) { | ||
| if (!crud(c)) | ||
| break; | ||
| src++; | ||
| } | ||
|
|
||
| /* Remove crud from the end.. */ | ||
| len = strlen(src); | ||
| while (len > 0) { | ||
| c = src[len-1]; | ||
| if (!crud(c)) | ||
| break; | ||
| --len; | ||
| } | ||
|
|
||
| /* | ||
| * Copy the rest to the buffer, but avoid the special | ||
| * characters '\n' '<' and '>' that act as delimeters on | ||
| * a identification line | ||
| */ | ||
| for (i = 0; i < len; i++) { | ||
| c = *src++; | ||
| switch (c) { | ||
| case '\n': case '<': case '>': | ||
| continue; | ||
| } | ||
| if (offset >= size) | ||
| return size; | ||
| buf[offset++] = c; | ||
| } | ||
| return offset; | ||
| } | ||
|
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||
| char *get_ident(const char *name, const char *email, const char *date_str) | ||
| { | ||
| static char buffer[1000]; | ||
| char date[50]; | ||
| int i; | ||
|
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||
| if (!name) | ||
| name = real_name; | ||
| if (!email) | ||
| email = real_email; | ||
| strcpy(date, real_date); | ||
| if (date_str) | ||
| parse_date(date_str, date, sizeof(date)); | ||
|
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||
| i = copy(buffer, sizeof(buffer), 0, name); | ||
| i = add_raw(buffer, sizeof(buffer), i, " <"); | ||
| i = copy(buffer, sizeof(buffer), i, email); | ||
| i = add_raw(buffer, sizeof(buffer), i, "> "); | ||
| i = copy(buffer, sizeof(buffer), i, date); | ||
| if (i >= sizeof(buffer)) | ||
| die("Impossibly long personal identifier"); | ||
| buffer[i] = 0; | ||
| return buffer; | ||
| } |