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Add virtualization support to git-daemon
Signed-off-by: Jon Loeliger Signed-off-by: Junio C Hamano <junkio@cox.net>
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Jon Loeliger
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Junio C Hamano
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Sep 20, 2006
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,82 @@ | ||
| /* | ||
| * Copyright 2006 Jon Loeliger | ||
| */ | ||
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| #include <string.h> | ||
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| #include "interpolate.h" | ||
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| /* | ||
| * Convert a NUL-terminated string in buffer orig | ||
| * into the supplied buffer, result, whose length is reslen, | ||
| * performing substitutions on %-named sub-strings from | ||
| * the table, interps, with ninterps entries. | ||
| * | ||
| * Example interps: | ||
| * { | ||
| * { "%H", "example.org"}, | ||
| * { "%port", "123"}, | ||
| * { "%%", "%"}, | ||
| * } | ||
| * | ||
| * Returns 1 on a successful substitution pass that fits in result, | ||
| * Returns 0 on a failed or overflowing substitution pass. | ||
| */ | ||
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| int interpolate(char *result, int reslen, | ||
| char *orig, | ||
| struct interp *interps, int ninterps) | ||
| { | ||
| char *src = orig; | ||
| char *dest = result; | ||
| int newlen = 0; | ||
| char *name, *value; | ||
| int namelen, valuelen; | ||
| int i; | ||
| char c; | ||
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| memset(result, 0, reslen); | ||
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| while ((c = *src) && newlen < reslen - 1) { | ||
| if (c == '%') { | ||
| /* Try to match an interpolation string. */ | ||
| for (i = 0; i < ninterps; i++) { | ||
| name = interps[i].name; | ||
| namelen = strlen(name); | ||
| if (strncmp(src, name, namelen) == 0) { | ||
| break; | ||
| } | ||
| } | ||
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| /* Check for valid interpolation. */ | ||
| if (i < ninterps) { | ||
| value = interps[i].value; | ||
| valuelen = strlen(value); | ||
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| if (newlen + valuelen < reslen - 1) { | ||
| /* Substitute. */ | ||
| strncpy(dest, value, valuelen); | ||
| newlen += valuelen; | ||
| dest += valuelen; | ||
| src += namelen; | ||
| } else { | ||
| /* Something's not fitting. */ | ||
| return 0; | ||
| } | ||
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| } else { | ||
| /* Skip bogus interpolation. */ | ||
| *dest++ = *src++; | ||
| newlen++; | ||
| } | ||
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| } else { | ||
| /* Straight copy one non-interpolation character. */ | ||
| *dest++ = *src++; | ||
| newlen++; | ||
| } | ||
| } | ||
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| return newlen < reslen - 1; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| /* | ||
| * Copyright 2006 Jon Loeliger | ||
| */ | ||
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| #ifndef INTERPOLATE_H | ||
| #define INTERPOLATE_H | ||
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| struct interp { | ||
| char *name; | ||
| char *value; | ||
| }; | ||
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| extern int interpolate(char *result, int reslen, | ||
| char *orig, | ||
| struct interp *interps, int ninterps); | ||
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| #endif /* INTERPOLATE_H */ |