Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/source/pdf/pdf-store.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:
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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 "mupdf/pdf.h"
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25
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26 #include <assert.h>
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28 static int
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29 pdf_make_hash_key(fz_context *ctx, fz_store_hash *hash, void *key_)
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30 {
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31 pdf_obj *key = (pdf_obj *)key_;
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32
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33 if (!pdf_is_indirect(ctx, key))
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34 return 0;
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35 hash->u.pi.i = pdf_to_num(ctx, key);
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36 hash->u.pi.ptr = pdf_get_indirect_document(ctx, key);
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37 return 1;
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38 }
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39
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40 static void *
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41 pdf_keep_key(fz_context *ctx, void *key)
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42 {
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43 return (void *)pdf_keep_obj(ctx, (pdf_obj *)key);
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44 }
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45
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46 static void
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47 pdf_drop_key(fz_context *ctx, void *key)
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48 {
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49 pdf_drop_obj(ctx, (pdf_obj *)key);
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50 }
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51
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52 static int
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53 pdf_cmp_key(fz_context *ctx, void *k0, void *k1)
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54 {
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55 return pdf_objcmp(ctx, (pdf_obj *)k0, (pdf_obj *)k1);
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56 }
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57
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58 static void
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59 pdf_format_key(fz_context *ctx, char *s, size_t n, void *key_)
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60 {
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61 pdf_obj *key = (pdf_obj *)key_;
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62 if (pdf_is_indirect(ctx, key))
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63 fz_snprintf(s, n, "(%d 0 R)", pdf_to_num(ctx, key));
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64 else
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65 {
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66 size_t t;
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67 char *p = pdf_sprint_obj(ctx, s, n, &t, key, 1, 0);
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68 if (p != s) {
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69 fz_strlcpy(s, p, n);
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70 fz_free(ctx, p);
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71 }
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72 }
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73 }
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74
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75 static const fz_store_type pdf_obj_store_type =
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76 {
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77 "pdf_obj",
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78 pdf_make_hash_key,
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79 pdf_keep_key,
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80 pdf_drop_key,
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81 pdf_cmp_key,
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82 pdf_format_key,
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83 NULL
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84 };
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85
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86 void
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87 pdf_store_item(fz_context *ctx, pdf_obj *key, void *val, size_t itemsize)
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88 {
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89 void *existing;
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90
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91 assert(pdf_is_name(ctx, key) || pdf_is_array(ctx, key) || pdf_is_dict(ctx, key) || pdf_is_indirect(ctx, key));
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92 existing = fz_store_item(ctx, key, val, itemsize, &pdf_obj_store_type);
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93 if (existing)
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94 fz_warn(ctx, "unexpectedly replacing entry in PDF store");
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95 }
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96
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97 void *
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98 pdf_find_item(fz_context *ctx, fz_store_drop_fn *drop, pdf_obj *key)
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99 {
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100 return fz_find_item(ctx, drop, key, &pdf_obj_store_type);
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101 }
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102
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103 void
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104 pdf_remove_item(fz_context *ctx, fz_store_drop_fn *drop, pdf_obj *key)
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105 {
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106 fz_remove_item(ctx, drop, key, &pdf_obj_store_type);
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107 }
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108
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109 static int
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110 pdf_filter_store(fz_context *ctx, void *doc_, void *key)
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111 {
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112 pdf_document *doc = (pdf_document *)doc_;
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113 pdf_obj *obj = (pdf_obj *)key;
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114 pdf_document *key_doc = pdf_get_bound_document(ctx, obj);
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115
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116 return (doc == key_doc);
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117 }
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118
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119 void
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120 pdf_empty_store(fz_context *ctx, pdf_document *doc)
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121 {
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122 fz_filter_store(ctx, pdf_filter_store, doc, &pdf_obj_store_type);
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123 fz_drop_drawn_tiles_for_document(ctx, (fz_document *)doc);
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124 }
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125
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126 static int
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127 pdf_filter_locals(fz_context *ctx, void *doc_, void *key)
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128 {
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129 pdf_document *doc = (pdf_document *)doc_;
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130 pdf_obj *obj = (pdf_obj *)key;
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131 pdf_document *key_doc = pdf_get_bound_document(ctx, obj);
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132
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133 return (doc == key_doc && pdf_is_local_object(ctx, doc, obj));
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134 }
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parents:
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135
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parents:
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136 void pdf_purge_locals_from_store(fz_context *ctx, pdf_document *doc)
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parents:
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137 {
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parents:
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138 fz_filter_store(ctx, pdf_filter_locals, doc, &pdf_obj_store_type);
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parents:
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139 }
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parents:
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140
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parents:
diff changeset
141 struct doc_num_info {
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142 pdf_document *doc;
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parents:
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143 int num;
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parents:
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144 };
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parents:
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145
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parents:
diff changeset
146 static int
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parents:
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147 pdf_filter_object_number(fz_context *ctx, void *ref_, void *key_)
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parents:
diff changeset
148 {
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parents:
diff changeset
149 struct doc_num_info *ref = ref_;
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parents:
diff changeset
150 pdf_obj *key_obj = (pdf_obj *)key_;
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parents:
diff changeset
151 pdf_document *key_doc = pdf_get_bound_document(ctx, key_obj);
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parents:
diff changeset
152 return (ref->doc == key_doc && ref->num == pdf_to_num(ctx, key_obj));
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parents:
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153 }
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parents:
diff changeset
154
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parents:
diff changeset
155 void pdf_purge_object_from_store(fz_context *ctx, pdf_document *doc, int num)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
157 struct doc_num_info ref = { doc, num };
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 fz_filter_store(ctx, pdf_filter_object_number, &ref, &pdf_obj_store_type);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
159 }