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| 3584 | sourcerer | 1 | /* |
| 2 | * This file is part of LibCSS. |
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| 3 | * Licensed under the MIT License, |
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| 4 | * http://www.opensource.org/licenses/mit-license.php |
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| 5 | * Copyright 2009 John-Mark Bell |
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| 6 | */ |
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| 7 | |||
| 8 | #include |
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| 9 | |||
| 10 | #include "bytecode/bytecode.h" |
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| 11 | #include "bytecode/opcodes.h" |
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| 12 | #include "parse/properties/properties.h" |
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| 13 | #include "parse/properties/utils.h" |
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| 14 | |||
| 15 | /** |
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| 16 | * Parse cursor |
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| 17 | * |
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| 18 | * \param c Parsing context |
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| 19 | * \param vector Vector of tokens to process |
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| 20 | * \param ctx Pointer to vector iteration context |
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| 21 | * \param result Pointer to location to receive resulting style |
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| 22 | * \return CSS_OK on success, |
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| 23 | * CSS_NOMEM on memory exhaustion, |
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| 24 | * CSS_INVALID if the input is not valid |
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| 25 | * |
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| 26 | * Post condition: \a *ctx is updated with the next token to process |
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| 27 | * If the input is invalid, then \a *ctx remains unchanged. |
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| 28 | */ |
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| 29 | css_error css__parse_cursor(css_language *c, |
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| 30 | const parserutils_vector *vector, int *ctx, |
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| 31 | css_style *result) |
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| 32 | { |
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| 33 | int orig_ctx = *ctx; |
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| 34 | css_error error = CSS_OK; |
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| 35 | const css_token *token; |
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| 36 | bool match; |
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| 37 | |||
| 38 | /* [ (URI ',')* IDENT(auto, crosshair, default, pointer, move, e-resize, |
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| 39 | * ne-resize, nw-resize, n-resize, se-resize, sw-resize, |
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| 40 | * s-resize, w-resize, text, wait, help, progress) ] |
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| 41 | * | IDENT(inherit) |
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| 42 | */ |
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| 43 | token = parserutils_vector_iterate(vector, ctx); |
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| 44 | if ((token == NULL) || |
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| 45 | (token->type != CSS_TOKEN_IDENT && |
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| 46 | token->type != CSS_TOKEN_URI)) { |
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| 47 | *ctx = orig_ctx; |
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| 48 | return CSS_INVALID; |
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| 49 | } |
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| 50 | |||
| 51 | if ((token->type == CSS_TOKEN_IDENT) && |
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| 52 | (lwc_string_caseless_isequal(token->idata, |
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| 53 | c->strings[INHERIT], |
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| 54 | &match) == lwc_error_ok && match)) { |
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| 55 | error = css_stylesheet_style_inherit(result, CSS_PROP_CURSOR); |
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| 56 | } else { |
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| 57 | bool first = true; |
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| 58 | |||
| 59 | /* Macro to output the value marker, awkward because we need to check |
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| 60 | * first to determine how the value is constructed. |
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| 61 | */ |
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| 62 | #define CSS_APPEND(CSSVAL) css__stylesheet_style_append(result, first?buildOPV(CSS_PROP_CURSOR, 0, CSSVAL):CSSVAL) |
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| 63 | |||
| 64 | |||
| 65 | /* URI* */ |
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| 66 | while (token != NULL && token->type == CSS_TOKEN_URI) { |
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| 67 | lwc_string *uri; |
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| 68 | uint32_t uri_snumber; |
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| 69 | |||
| 70 | error = c->sheet->resolve(c->sheet->resolve_pw, |
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| 71 | c->sheet->url, |
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| 72 | token->idata, &uri); |
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| 73 | if (error != CSS_OK) { |
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| 74 | *ctx = orig_ctx; |
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| 75 | return error; |
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| 76 | } |
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| 77 | |||
| 78 | error = css__stylesheet_string_add(c->sheet, |
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| 79 | uri, |
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| 80 | &uri_snumber); |
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| 81 | if (error != CSS_OK) { |
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| 82 | *ctx = orig_ctx; |
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| 83 | return error; |
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| 84 | } |
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| 85 | |||
| 86 | error = CSS_APPEND(CURSOR_URI); |
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| 87 | if (error != CSS_OK) { |
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| 88 | *ctx = orig_ctx; |
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| 89 | return error; |
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| 90 | } |
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| 91 | |||
| 92 | error = css__stylesheet_style_append(result, uri_snumber); |
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| 93 | if (error != CSS_OK) { |
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| 94 | *ctx = orig_ctx; |
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| 95 | return error; |
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| 96 | } |
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| 97 | |||
| 98 | consumeWhitespace(vector, ctx); |
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| 99 | |||
| 100 | /* Expect ',' */ |
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| 101 | token = parserutils_vector_iterate(vector, ctx); |
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| 102 | if (token == NULL || tokenIsChar(token, ',') == false) { |
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| 103 | *ctx = orig_ctx; |
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| 104 | return CSS_INVALID; |
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| 105 | } |
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| 106 | |||
| 107 | consumeWhitespace(vector, ctx); |
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| 108 | |||
| 109 | /* Expect either URI or IDENT */ |
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| 110 | token = parserutils_vector_iterate(vector, ctx); |
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| 111 | if (token == NULL || (token->type != CSS_TOKEN_IDENT && |
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| 112 | token->type != CSS_TOKEN_URI)) { |
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| 113 | *ctx = orig_ctx; |
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| 114 | return CSS_INVALID; |
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| 115 | } |
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| 116 | |||
| 117 | first = false; |
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| 118 | } |
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| 119 | |||
| 120 | /* IDENT */ |
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| 121 | if (token != NULL && token->type == CSS_TOKEN_IDENT) { |
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| 122 | if ((lwc_string_caseless_isequal( |
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| 123 | token->idata, c->strings[AUTO], |
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| 124 | &match) == lwc_error_ok && match)) { |
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| 125 | error=CSS_APPEND(CURSOR_AUTO); |
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| 126 | } else if ((lwc_string_caseless_isequal( |
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| 127 | token->idata, c->strings[CROSSHAIR], |
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| 128 | &match) == lwc_error_ok && match)) { |
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| 129 | error=CSS_APPEND(CURSOR_CROSSHAIR); |
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| 130 | } else if ((lwc_string_caseless_isequal( |
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| 131 | token->idata, c->strings[DEFAULT], |
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| 132 | &match) == lwc_error_ok && match)) { |
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| 133 | error=CSS_APPEND(CURSOR_DEFAULT); |
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| 134 | } else if ((lwc_string_caseless_isequal( |
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| 135 | token->idata, c->strings[POINTER], |
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| 136 | &match) == lwc_error_ok && match)) { |
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| 137 | error=CSS_APPEND(CURSOR_POINTER); |
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| 138 | } else if ((lwc_string_caseless_isequal( |
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| 139 | token->idata, c->strings[MOVE], |
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| 140 | &match) == lwc_error_ok && match)) { |
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| 141 | error=CSS_APPEND(CURSOR_MOVE); |
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| 142 | } else if ((lwc_string_caseless_isequal( |
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| 143 | token->idata, c->strings[E_RESIZE], |
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| 144 | &match) == lwc_error_ok && match)) { |
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| 145 | error=CSS_APPEND(CURSOR_E_RESIZE); |
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| 146 | } else if ((lwc_string_caseless_isequal( |
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| 147 | token->idata, c->strings[NE_RESIZE], |
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| 148 | &match) == lwc_error_ok && match)) { |
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| 149 | error=CSS_APPEND(CURSOR_NE_RESIZE); |
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| 150 | } else if ((lwc_string_caseless_isequal( |
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| 151 | token->idata, c->strings[NW_RESIZE], |
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| 152 | &match) == lwc_error_ok && match)) { |
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| 153 | error=CSS_APPEND(CURSOR_NW_RESIZE); |
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| 154 | } else if ((lwc_string_caseless_isequal( |
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| 155 | token->idata, c->strings[N_RESIZE], |
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| 156 | &match) == lwc_error_ok && match)) { |
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| 157 | error=CSS_APPEND(CURSOR_N_RESIZE); |
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| 158 | } else if ((lwc_string_caseless_isequal( |
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| 159 | token->idata, c->strings[SE_RESIZE], |
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| 160 | &match) == lwc_error_ok && match)) { |
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| 161 | error=CSS_APPEND(CURSOR_SE_RESIZE); |
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| 162 | } else if ((lwc_string_caseless_isequal( |
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| 163 | token->idata, c->strings[SW_RESIZE], |
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| 164 | &match) == lwc_error_ok && match)) { |
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| 165 | error=CSS_APPEND(CURSOR_SW_RESIZE); |
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| 166 | } else if ((lwc_string_caseless_isequal( |
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| 167 | token->idata, c->strings[S_RESIZE], |
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| 168 | &match) == lwc_error_ok && match)) { |
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| 169 | error=CSS_APPEND(CURSOR_S_RESIZE); |
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| 170 | } else if ((lwc_string_caseless_isequal( |
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| 171 | token->idata, c->strings[W_RESIZE], |
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| 172 | &match) == lwc_error_ok && match)) { |
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| 173 | error=CSS_APPEND(CURSOR_W_RESIZE); |
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| 174 | } else if ((lwc_string_caseless_isequal( |
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| 175 | token->idata, c->strings[LIBCSS_TEXT], |
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| 176 | &match) == lwc_error_ok && match)) { |
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| 177 | error=CSS_APPEND(CURSOR_TEXT); |
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| 178 | } else if ((lwc_string_caseless_isequal( |
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| 179 | token->idata, c->strings[WAIT], |
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| 180 | &match) == lwc_error_ok && match)) { |
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| 181 | error=CSS_APPEND(CURSOR_WAIT); |
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| 182 | } else if ((lwc_string_caseless_isequal( |
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| 183 | token->idata, c->strings[HELP], |
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| 184 | &match) == lwc_error_ok && match)) { |
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| 185 | error=CSS_APPEND(CURSOR_HELP); |
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| 186 | } else if ((lwc_string_caseless_isequal( |
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| 187 | token->idata, c->strings[PROGRESS], |
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| 188 | &match) == lwc_error_ok && match)) { |
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| 189 | error=CSS_APPEND(CURSOR_PROGRESS); |
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| 190 | } else { |
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| 191 | error = CSS_INVALID; |
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| 192 | } |
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| 193 | } |
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| 194 | |||
| 195 | } |
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| 196 | |||
| 197 | if (error != CSS_OK) |
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| 198 | *ctx = orig_ctx; |
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| 199 | |||
| 200 | return error; |
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| 201 | } |
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| 202 |