Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/source/xps/xps-util.c @ 46:7ee69f120f19 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 // Copyright (C) 2004-2021 Artifex Software, Inc.
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2 //
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3 // This file is part of MuPDF.
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4 //
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5 // MuPDF is free software: you can redistribute it and/or modify it under the
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6 // terms of the GNU Affero General Public License as published by the Free
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7 // Software Foundation, either version 3 of the License, or (at your option)
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8 // any later version.
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9 //
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10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
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11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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13 // details.
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14 //
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15 // You should have received a copy of the GNU Affero General Public License
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16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
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17 //
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18 // Alternative licensing terms are available from the licensor.
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19 // For commercial licensing, see <https://www.artifex.com/> or contact
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20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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21 // CA 94129, USA, for further information.
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22
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23 #include "mupdf/fitz.h"
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24 #include "xps-imp.h"
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25
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26 static inline int xps_tolower(int c)
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27 {
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28 if (c >= 'A' && c <= 'Z')
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29 return c + 32;
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30 return c;
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31 }
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32
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33 int
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34 xps_strcasecmp(char *a, char *b)
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35 {
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36 while (xps_tolower(*a) == xps_tolower(*b))
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37 {
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38 if (*a++ == 0)
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39 return 0;
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40 b++;
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41 }
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42 return xps_tolower(*a) - xps_tolower(*b);
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43 }
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44
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45 /* A URL is defined as consisting of a:
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46 * SCHEME (e.g. http:)
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47 * AUTHORITY (username, password, hostname, port, eg //test:passwd@mupdf.com:999)
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48 * PATH (e.g. /download)
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49 * QUERY (e.g. ?view=page)
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50 * FRAGMENT (e.g. #fred) (not strictly part of the URL)
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51 */
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52 static char *
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53 skip_scheme(char *path)
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54 {
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55 char *p = path;
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56
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57 /* Skip over: alpha *(alpha | digit | "+" | "-" | ".") looking for : */
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58 if (*p >= 'a' && *p <= 'z')
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59 {
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60 /* Starts with a-z */
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61 }
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62 else if (*p >= 'A' && *p <= 'Z')
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63 {
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64 /* Starts with A-Z */
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65 }
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66 else
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67 return path;
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68
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69 while (*++p)
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70 {
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71 if (*p >= 'a' && *p <= 'z')
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72 continue;
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73 if (*p >= 'A' && *p <= 'Z')
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74 continue;
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75 if (*p >= '0' && *p <= '9')
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76 continue;
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77 if (*p == '+')
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78 continue;
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79 if (*p == '-')
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80 continue;
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81 if (*p == '.')
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82 continue;
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83 if (*p == ':')
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84 return p+1;
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85 break;
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86 }
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87 return path;
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88 }
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89
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90 static char *
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91 skip_authority(char *path)
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92 {
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93 char *p = path;
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94
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95 /* Authority section must start with '//' */
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96 if (p[0] != '/' || p[1] != '/')
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97 return path;
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98 p += 2;
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99
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100 /* Authority is terminated by end of URL, '/' or '?' */
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101 while (*p && *p != '/' && *p != '?')
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
102 p++;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
103
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
104 return p;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
105 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
107 #define SEP(x) ((x)=='/' || (x) == 0)
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parents:
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108
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
109 static char *
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
110 clean_path(char *name)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
111 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
112 char *p, *q, *dotdot, *start;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
113 int rooted;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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114
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parents:
diff changeset
115 start = skip_scheme(name);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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116 start = skip_authority(start);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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117 rooted = start[0] == '/';
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parents:
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118
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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119 /*
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120 * invariants:
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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121 * p points at beginning of path element we're considering.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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122 * q points just past the last path element we wrote (no slash).
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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123 * dotdot points just past the point where .. cannot backtrack
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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124 * any further (no slash).
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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125 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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126 p = q = dotdot = start + rooted;
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127 while (*p)
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parents:
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128 {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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129 if(p[0] == '/') /* null element */
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parents:
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130 p++;
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parents:
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131 else if (p[0] == '.' && SEP(p[1]))
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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132 p += 1; /* don't count the separator in case it is nul */
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parents:
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133 else if (p[0] == '.' && p[1] == '.' && SEP(p[2]))
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parents:
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134 {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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135 p += 2;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
136 if (q > dotdot) /* can backtrack */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
137 {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
138 while(--q > dotdot && *q != '/')
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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139 ;
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140 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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141 else if (!rooted) /* /.. is / but ./../ is .. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
142 {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
143 if (q != start)
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parents:
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144 *q++ = '/';
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parents:
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145 *q++ = '.';
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parents:
diff changeset
146 *q++ = '.';
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
147 dotdot = q;
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parents:
diff changeset
148 }
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parents:
diff changeset
149 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
150 else /* real path element */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
151 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
152 if (q != start+rooted)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
153 *q++ = '/';
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
154 while ((*q = *p) != '/' && *q != 0)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
155 p++, q++;
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parents:
diff changeset
156 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
157 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
158
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
159 /* Protect against 'blah:' input, where start = q = the terminator.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
160 * We must not overrun it. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161 if (q == start && *q != 0) /* empty string is really "." */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 *q++ = '.';
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163 *q = '\0';
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 return name;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
166 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 void
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
169 xps_resolve_url(fz_context *ctx, xps_document *doc, char *output, char *base_uri, char *path, int output_size)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
170 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
171 char *p = skip_authority(skip_scheme(path));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
172
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173 if (p != path || path[0] == '/')
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 fz_strlcpy(output, path, output_size);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
176 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
177 else
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
178 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
179 size_t len = fz_strlcpy(output, base_uri, output_size);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
180 if (len == 0 || output[len-1] != '/')
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
181 fz_strlcat(output, "/", output_size);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
182 fz_strlcat(output, path, output_size);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
184 clean_path(output);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
185 }