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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4680 | right-hear | 1 | #include "fitz.h" |
| 2 | #include "muxps.h" |
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| 3 | |||
| 4 | static inline int xps_tolower(int c) |
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| 5 | { |
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| 6 | if (c >= 'A' && c <= 'Z') |
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| 7 | return c + 32; |
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| 8 | return c; |
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| 9 | } |
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| 10 | |||
| 11 | int |
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| 12 | xps_strcasecmp(char *a, char *b) |
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| 13 | { |
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| 14 | while (xps_tolower(*a) == xps_tolower(*b)) |
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| 15 | { |
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| 16 | if (*a++ == 0) |
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| 17 | return 0; |
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| 18 | b++; |
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| 19 | } |
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| 20 | return xps_tolower(*a) - xps_tolower(*b); |
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| 21 | } |
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| 22 | |||
| 23 | #define SEP(x) ((x)=='/' || (x) == 0) |
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| 24 | |||
| 25 | static char * |
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| 26 | xps_clean_path(char *name) |
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| 27 | { |
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| 28 | char *p, *q, *dotdot; |
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| 29 | int rooted; |
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| 30 | |||
| 31 | rooted = name[0] == '/'; |
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| 32 | |||
| 33 | /* |
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| 34 | * invariants: |
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| 35 | * p points at beginning of path element we're considering. |
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| 36 | * q points just past the last path element we wrote (no slash). |
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| 37 | * dotdot points just past the point where .. cannot backtrack |
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| 38 | * any further (no slash). |
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| 39 | */ |
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| 40 | p = q = dotdot = name + rooted; |
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| 41 | while (*p) |
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| 42 | { |
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| 43 | if(p[0] == '/') /* null element */ |
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| 44 | p++; |
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| 45 | else if (p[0] == '.' && SEP(p[1])) |
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| 46 | p += 1; /* don't count the separator in case it is nul */ |
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| 47 | else if (p[0] == '.' && p[1] == '.' && SEP(p[2])) |
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| 48 | { |
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| 49 | p += 2; |
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| 50 | if (q > dotdot) /* can backtrack */ |
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| 51 | { |
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| 52 | while(--q > dotdot && *q != '/') |
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| 53 | ; |
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| 54 | } |
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| 55 | else if (!rooted) /* /.. is / but ./../ is .. */ |
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| 56 | { |
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| 57 | if (q != name) |
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| 58 | *q++ = '/'; |
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| 59 | *q++ = '.'; |
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| 60 | *q++ = '.'; |
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| 61 | dotdot = q; |
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| 62 | } |
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| 63 | } |
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| 64 | else /* real path element */ |
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| 65 | { |
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| 66 | if (q != name+rooted) |
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| 67 | *q++ = '/'; |
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| 68 | while ((*q = *p) != '/' && *q != 0) |
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| 69 | p++, q++; |
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| 70 | } |
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| 71 | } |
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| 72 | |||
| 73 | if (q == name) /* empty string is really "." */ |
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| 74 | *q++ = '.'; |
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| 75 | *q = '\0'; |
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| 76 | |||
| 77 | return name; |
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| 78 | } |
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| 79 | |||
| 80 | void |
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| 81 | xps_absolute_path(char *output, char *base_uri, char *path, int output_size) |
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| 82 | { |
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| 83 | if (path[0] == '/') |
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| 84 | { |
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| 85 | fz_strlcpy(output, path, output_size); |
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| 86 | } |
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| 87 | else |
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| 88 | { |
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| 89 | fz_strlcpy(output, base_uri, output_size); |
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| 90 | fz_strlcat(output, "/", output_size); |
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| 91 | fz_strlcat(output, path, output_size); |
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| 92 | } |
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| 93 | xps_clean_path(output); |
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| 94 | } |