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52 lines
1.2 KiB
52 lines
1.2 KiB
#include "../../git-compat-util.h" |
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int win32_has_dos_drive_prefix(const char *path) |
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{ |
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int i; |
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/* |
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* Does it start with an ASCII letter (i.e. highest bit not set), |
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* followed by a colon? |
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*/ |
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if (!(0x80 & (unsigned char)*path)) |
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return *path && path[1] == ':' ? 2 : 0; |
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/* |
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* While drive letters must be letters of the English alphabet, it is |
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* possible to assign virtually _any_ Unicode character via `subst` as |
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* a drive letter to "virtual drives". Even `1`, or `ä`. Or fun stuff |
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* like this: |
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* |
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* subst ֍: %USERPROFILE%\Desktop |
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*/ |
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for (i = 1; i < 4 && (0x80 & (unsigned char)path[i]); i++) |
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; /* skip first UTF-8 character */ |
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return path[i] == ':' ? i + 1 : 0; |
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} |
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int win32_skip_dos_drive_prefix(char **path) |
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{ |
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int ret = has_dos_drive_prefix(*path); |
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*path += ret; |
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return ret; |
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} |
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int win32_offset_1st_component(const char *path) |
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{ |
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char *pos = (char *)path; |
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/* unc paths */ |
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if (!skip_dos_drive_prefix(&pos) && |
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is_dir_sep(pos[0]) && is_dir_sep(pos[1])) { |
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/* skip server name */ |
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pos = strpbrk(pos + 2, "\\/"); |
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if (!pos) |
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return 0; /* Error: malformed unc path */ |
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do { |
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pos++; |
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} while (*pos && !is_dir_sep(*pos)); |
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} |
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return pos + is_dir_sep(*pos) - path; |
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}
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