Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/source/xps/xps-util.c @ 21:2f43e400f144

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Provide an "all" target to build both the sdist and the wheel
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 10:28:53 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
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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 }