Wed, 31 Aug 2016 14:47:01 +0200
fixes ancient header macro
23 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
35 | 4 | * Copyright 2016 Mike Becker. All rights reserved. |
23 | 5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | * | |
28 | */ | |
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29 | |
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30 | #include "c2html.h" |
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31 | |
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32 | #include "ucx/list.h" |
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33 | #include "ucx/utils.h" |
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34 | |
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35 | #define try_write(wfnc, str, n, buf, written, maxlen) \ |
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36 | { \ |
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37 | size_t m = maxlen-written; \ |
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38 | written += wfnc(str, 1, n > m ? m : n, buf); \ |
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39 | } |
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40 | |
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41 | static size_t formatlines(c2html_highlighter_func highlighter, UcxList *in, |
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42 | void *outbuf, write_func wfnc, size_t maxlen, int showlineno) { |
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43 | /* total written bytes */ |
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44 | size_t written = 0; |
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45 | |
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46 | /* compute width of line numbering */ |
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47 | int lnw = 0; |
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48 | if (showlineno) { |
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49 | size_t lines = ucx_list_size(in); |
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50 | for (size_t p = 1; p < lines ; p*=10) lnw++; |
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51 | } |
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52 | |
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53 | /* start monospace formatting */ |
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54 | try_write(wfnc, "<pre>\n", 6, outbuf, written, maxlen); |
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55 | |
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56 | /* process lines */ |
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57 | size_t lineno = 0; |
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58 | c2html_highlighter_data* hd = malloc(sizeof(c2html_highlighter_data)); |
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59 | hd->multiline_comment = 0; |
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60 | hd->primary_buffer = ucx_buffer_new(NULL, 256, UCX_BUFFER_AUTOEXTEND); |
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61 | hd->secondary_buffer = ucx_buffer_new(NULL, 32, UCX_BUFFER_AUTOEXTEND); |
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62 | UcxBuffer *line = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND); |
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63 | |
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64 | UCX_FOREACH(sourceline, in) { |
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65 | /* increase line number and clean line buffer */ |
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66 | lineno++; |
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67 | ucx_buffer_clear(line); |
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68 | |
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69 | /* write line number */ |
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70 | if (showlineno) { |
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71 | ucx_bprintf(line, "<span class=\"c2html-lineno\">" |
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72 | "<a name=\"l%d\" href=\"#l%d\">%*d </a></span> ", |
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73 | lineno, lineno, lnw, lineno); |
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74 | } |
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75 | |
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76 | /* process code line */ |
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77 | highlighter(sourceline->data, line, hd); |
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78 | |
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79 | /* write code line */ |
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80 | try_write(wfnc, line->space, line->size, outbuf, written, maxlen); |
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81 | |
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82 | if (written == maxlen) break; |
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83 | } |
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84 | |
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85 | /* end monospace formatting */ |
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86 | try_write(wfnc, "</pre>\n", 7, outbuf, written, maxlen); |
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87 | |
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88 | /* cleanup and return */ |
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89 | ucx_buffer_free(hd->primary_buffer); |
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90 | ucx_buffer_free(hd->secondary_buffer); |
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91 | free(hd); |
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92 | ucx_buffer_free(line); |
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93 | |
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94 | return written; |
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95 | } |
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96 | |
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97 | size_t c2html_formatn(void* inputbuffer, read_func rfnc, |
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98 | char* ibuf, size_t ibuflen, void* outputbuffer, write_func wfnc, |
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99 | size_t maxlen, c2html_highlighter_func hltr, int showln) { |
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100 | |
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101 | UcxBuffer *content = ucx_buffer_new(NULL, ibuflen*2, UCX_BUFFER_AUTOEXTEND); |
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102 | ucx_stream_copy(inputbuffer, content, rfnc, (write_func) ucx_buffer_write, |
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103 | ibuf, ibuflen, (size_t)-1); |
19 | 104 | |
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105 | UcxList *lines = ucx_list_append(NULL, content->space); |
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106 | for (size_t i = 1 ; i < content->size ; i++) { |
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107 | if (content->space[i] == '\r') { |
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108 | content->space[i] = '\n'; i++; |
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109 | } |
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110 | if (content->space[i] == '\n' && i+1 < content->size) { |
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111 | ucx_list_append(lines, content->space+i+1); |
11 | 112 | } |
19 | 113 | } |
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114 | |
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115 | size_t n = formatlines(hltr, lines, outputbuffer, wfnc, maxlen, showln); |
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116 | |
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117 | ucx_buffer_free(content); |
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118 | return n; |
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119 | } |
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120 | |
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121 | size_t c2html_format(void* inputbuffer, read_func rfnc, |
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122 | char* ibuf, size_t ibuflen, void* outputbuffer, write_func wfnc, |
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123 | c2html_highlighter_func hltr, int showln) { |
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124 | return c2html_formatn(inputbuffer, rfnc, ibuf, ibuflen, |
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125 | outputbuffer, wfnc, (size_t)-1, hltr, showln); |
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126 | } |
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127 | |
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128 | size_t c2html_format_file(FILE* inputfile, char *ibuf, size_t ibuflen, |
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129 | void* outputbuffer, write_func wfnc, |
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130 | c2html_highlighter_func hltr, int showln) { |
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131 | return c2html_format(inputfile, (read_func) fread, ibuf, ibuflen, |
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132 | outputbuffer, wfnc, hltr, showln); |
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133 | } |
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134 | |
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135 | void c2html_fformat_file(FILE *inputfile, char *ibuf, size_t ibuflen, |
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136 | FILE* outputfile, c2html_highlighter_func hltr, int showln) { |
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137 | c2html_format(inputfile, (read_func) fread, ibuf, ibuflen, |
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138 | outputfile, (write_func) fwrite, hltr, showln); |
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139 | } |