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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 xml_element * |
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| 5 | xps_find_resource(xps_context *ctx, xps_resource *dict, char *name, char **urip) |
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| 6 | { |
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| 7 | xps_resource *head, *node; |
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| 8 | for (head = dict; head; head = head->parent) |
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| 9 | { |
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| 10 | for (node = head; node; node = node->next) |
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| 11 | { |
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| 12 | if (!strcmp(node->name, name)) |
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| 13 | { |
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| 14 | if (urip && head->base_uri) |
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| 15 | *urip = head->base_uri; |
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| 16 | return node->data; |
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| 17 | } |
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| 18 | } |
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| 19 | } |
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| 20 | return NULL; |
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| 21 | } |
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| 22 | |||
| 23 | static xml_element * |
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| 24 | xps_parse_resource_reference(xps_context *ctx, xps_resource *dict, char *att, char **urip) |
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| 25 | { |
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| 26 | char name[1024]; |
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| 27 | char *s; |
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| 28 | |||
| 29 | if (strstr(att, "{StaticResource ") != att) |
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| 30 | return NULL; |
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| 31 | |||
| 32 | fz_strlcpy(name, att + 16, sizeof name); |
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| 33 | s = strrchr(name, '}'); |
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| 34 | if (s) |
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| 35 | *s = 0; |
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| 36 | |||
| 37 | return xps_find_resource(ctx, dict, name, urip); |
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| 38 | } |
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| 39 | |||
| 40 | void |
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| 41 | xps_resolve_resource_reference(xps_context *ctx, xps_resource *dict, |
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| 42 | char **attp, xml_element **tagp, char **urip) |
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| 43 | { |
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| 44 | if (*attp) |
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| 45 | { |
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| 46 | xml_element *rsrc = xps_parse_resource_reference(ctx, dict, *attp, urip); |
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| 47 | if (rsrc) |
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| 48 | { |
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| 49 | *attp = NULL; |
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| 50 | *tagp = rsrc; |
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| 51 | } |
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| 52 | } |
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| 53 | } |
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| 54 | |||
| 55 | static int |
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| 56 | xps_parse_remote_resource_dictionary(xps_context *ctx, xps_resource **dictp, char *base_uri, char *source_att) |
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| 57 | { |
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| 58 | char part_name[1024]; |
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| 59 | char part_uri[1024]; |
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| 60 | xps_resource *dict; |
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| 61 | xps_part *part; |
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| 62 | xml_element *xml; |
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| 63 | char *s; |
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| 64 | int code; |
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| 65 | |||
| 66 | /* External resource dictionaries MUST NOT reference other resource dictionaries */ |
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| 67 | xps_absolute_path(part_name, base_uri, source_att, sizeof part_name); |
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| 68 | part = xps_read_part(ctx, part_name); |
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| 69 | if (!part) |
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| 70 | { |
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| 71 | return fz_throw("cannot find remote resource part '%s'", part_name); |
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| 72 | } |
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| 73 | |||
| 74 | xml = xml_parse_document(part->data, part->size); |
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| 75 | if (!xml) |
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| 76 | { |
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| 77 | xps_free_part(ctx, part); |
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| 78 | return fz_rethrow(-1, "cannot parse xml"); |
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| 79 | } |
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| 80 | |||
| 81 | if (strcmp(xml_tag(xml), "ResourceDictionary")) |
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| 82 | { |
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| 83 | xml_free_element(xml); |
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| 84 | xps_free_part(ctx, part); |
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| 85 | return fz_throw("expected ResourceDictionary element (found %s)", xml_tag(xml)); |
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| 86 | } |
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| 87 | |||
| 88 | fz_strlcpy(part_uri, part_name, sizeof part_uri); |
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| 89 | s = strrchr(part_uri, '/'); |
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| 90 | if (s) |
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| 91 | s[1] = 0; |
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| 92 | |||
| 93 | code = xps_parse_resource_dictionary(ctx, &dict, part_uri, xml); |
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| 94 | if (code) |
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| 95 | { |
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| 96 | xml_free_element(xml); |
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| 97 | xps_free_part(ctx, part); |
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| 98 | return fz_rethrow(code, "cannot parse remote resource dictionary: %s", part_uri); |
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| 99 | } |
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| 100 | |||
| 101 | dict->base_xml = xml; /* pass on ownership */ |
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| 102 | |||
| 103 | xps_free_part(ctx, part); |
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| 104 | |||
| 105 | *dictp = dict; |
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| 106 | return fz_okay; |
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| 107 | } |
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| 108 | |||
| 109 | int |
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| 110 | xps_parse_resource_dictionary(xps_context *ctx, xps_resource **dictp, char *base_uri, xml_element *root) |
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| 111 | { |
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| 112 | xps_resource *head; |
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| 113 | xps_resource *entry; |
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| 114 | xml_element *node; |
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| 115 | char *source; |
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| 116 | char *key; |
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| 117 | int code; |
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| 118 | |||
| 119 | source = xml_att(root, "Source"); |
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| 120 | if (source) |
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| 121 | { |
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| 122 | code = xps_parse_remote_resource_dictionary(ctx, dictp, base_uri, source); |
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| 123 | if (code) |
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| 124 | return fz_rethrow(code, "cannot parse remote resource dictionary"); |
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| 125 | return fz_okay; |
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| 126 | } |
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| 127 | |||
| 128 | head = NULL; |
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| 129 | |||
| 130 | for (node = xml_down(root); node; node = xml_next(node)) |
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| 131 | { |
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| 132 | key = xml_att(node, "x:Key"); |
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| 133 | if (key) |
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| 134 | { |
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| 135 | entry = fz_malloc(sizeof(xps_resource)); |
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| 136 | entry->name = key; |
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| 137 | entry->base_uri = NULL; |
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| 138 | entry->base_xml = NULL; |
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| 139 | entry->data = node; |
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| 140 | entry->next = head; |
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| 141 | entry->parent = NULL; |
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| 142 | head = entry; |
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| 143 | } |
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| 144 | } |
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| 145 | |||
| 146 | if (head) |
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| 147 | head->base_uri = fz_strdup(base_uri); |
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| 148 | else |
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| 149 | return fz_throw("empty resource dictionary"); |
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| 150 | |||
| 151 | *dictp = head; |
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| 152 | return fz_okay; |
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| 153 | } |
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| 154 | |||
| 155 | void |
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| 156 | xps_free_resource_dictionary(xps_context *ctx, xps_resource *dict) |
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| 157 | { |
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| 158 | xps_resource *next; |
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| 159 | while (dict) |
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| 160 | { |
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| 161 | next = dict->next; |
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| 162 | if (dict->base_xml) |
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| 163 | xml_free_element(dict->base_xml); |
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| 164 | if (dict->base_uri) |
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| 165 | fz_free(dict->base_uri); |
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| 166 | fz_free(dict); |
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| 167 | dict = next; |
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| 168 | } |
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| 169 | } |
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| 170 | |||
| 171 | void |
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| 172 | xps_debug_resource_dictionary(xps_resource *dict) |
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| 173 | { |
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| 174 | while (dict) |
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| 175 | { |
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| 176 | if (dict->base_uri) |
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| 177 | printf("URI = '%s'\n", dict->base_uri); |
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| 178 | printf("KEY = '%s' VAL = %p\n", dict->name, dict->data); |
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| 179 | if (dict->parent) |
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| 180 | { |
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| 181 | printf("PARENT = {\n"); |
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| 182 | xps_debug_resource_dictionary(dict->parent); |
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| 183 | printf("}\n"); |
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| 184 | } |
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| 185 | dict = dict->next; |
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| 186 | } |
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| 187 | } |