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comparison: src/c2html.c

src/c2html.c

changeset 4
323f674931fe
parent 2
3bced1fe9193
child 5
412f1896874b
equal deleted inserted replaced
3:b7a6d546bd1d 4:323f674931fe
30 #include <stdio.h> 30 #include <stdio.h>
31 #include <stdlib.h> 31 #include <stdlib.h>
32 #include <string.h> 32 #include <string.h>
33 #include <fcntl.h> 33 #include <fcntl.h>
34 #include <unistd.h> 34 #include <unistd.h>
35 #include "c2html.h" 35 #include <ctype.h>
36
37 #define INPUTBUF_SIZE 2048
38
39
40 typedef struct {
41 size_t count;
42 size_t capacity;
43 size_t maxlinewidth;
44 char** lines;
45 } inputfile_t;
36 46
37 inputfile_t *inputfilebuffer(size_t capacity) { 47 inputfile_t *inputfilebuffer(size_t capacity) {
38 inputfile_t *inputfile = (inputfile_t*) malloc(sizeof(inputfile_t)); 48 inputfile_t *inputfile = (inputfile_t*) malloc(sizeof(inputfile_t));
39 inputfile->lines = (char**) malloc(capacity * sizeof(char*)); 49 inputfile->lines = (char**) malloc(capacity * sizeof(char*));
40 inputfile->capacity = capacity; 50 inputfile->capacity = capacity;
41 inputfile->count = 0; 51 inputfile->count = 0;
52 inputfile->maxlinewidth = 0;
42 53
43 return inputfile; 54 return inputfile;
44 } 55 }
45 56
46 void addline(inputfile_t *inputfile, char* line, size_t width) { 57 void addline(inputfile_t *inputfile, char* line, size_t width) {
50 if (inputfile->count >= inputfile->capacity) { 61 if (inputfile->count >= inputfile->capacity) {
51 inputfile->capacity <<= 1; 62 inputfile->capacity <<= 1;
52 inputfile->lines = realloc(inputfile->lines, inputfile->capacity); 63 inputfile->lines = realloc(inputfile->lines, inputfile->capacity);
53 } 64 }
54 inputfile->lines[inputfile->count] = l; 65 inputfile->lines[inputfile->count] = l;
66 inputfile->maxlinewidth =
67 width > inputfile->maxlinewidth ? width : inputfile->maxlinewidth;
55 inputfile->count++; 68 inputfile->count++;
56 } 69 }
57 70
58 void freeinputfilebuffer(inputfile_t *inputfile) { 71 void freeinputfilebuffer(inputfile_t *inputfile) {
59 for (int i = 0 ; i < inputfile->count ; i++) { 72 for (int i = 0 ; i < inputfile->count ; i++) {
68 int fd = open(filename, O_RDONLY); 81 int fd = open(filename, O_RDONLY);
69 if (fd == -1) return NULL; 82 if (fd == -1) return NULL;
70 83
71 inputfile_t *inputfile = inputfilebuffer(512); 84 inputfile_t *inputfile = inputfilebuffer(512);
72 85
73 const size_t bufsize = 1024; 86 char buf[INPUTBUF_SIZE];
74 char buf[bufsize];
75 ssize_t r; 87 ssize_t r;
76 88
77 size_t maxlinewidth = 80; 89 size_t maxlinewidth = 256;
78 char *line = (char*) malloc(maxlinewidth); 90 char *line = (char*) malloc(maxlinewidth);
79 size_t col = 0; 91 size_t col = 0;
80 92
81 while ((r = read(fd, buf, bufsize)) > 0) { 93 while ((r = read(fd, buf, INPUTBUF_SIZE)) > 0) {
82 for (size_t i = 0 ; i < r ; i++) { 94 for (size_t i = 0 ; i < r ; i++) {
83 if (col >= maxlinewidth-4) { 95 if (col >= maxlinewidth-4) {
84 maxlinewidth <<= 1; 96 maxlinewidth <<= 1;
85 line = realloc(line, maxlinewidth); 97 line = realloc(line, maxlinewidth);
86 } 98 }
87 99
88 if (buf[i] == '\n') { 100 if (buf[i] == '\n') {
89 line[col] = 0; 101 line[col] = 0;
90 addline(inputfile, line, col); 102 addline(inputfile, line, col);
91 col = 0; 103 col = 0;
92 } else if (buf[i] == '<') {
93 line[col++] = '&'; line[col++] = 'l';
94 line[col++] = 't'; line[col++] = ';';
95 } else if (buf[i] == '>') {
96 line[col++] = '&'; line[col++] = 'g';
97 line[col++] = 't'; line[col++] = ';';
98 } else { 104 } else {
99 line[col++] = buf[i]; 105 line[col++] = buf[i];
100 } 106 }
101 } 107 }
102 } 108 }
106 close(fd); 112 close(fd);
107 113
108 return inputfile; 114 return inputfile;
109 } 115 }
110 116
117 void parseline(char *src, char *dest) {
118 size_t sp = 0, dp = 0;
119 /* indent */
120 while (isspace(src[sp])) {
121 dest[dp++] = src[sp++];
122 }
123 for (char c = src[sp] ; c ; c=src[++sp]) {
124 switch (c) {
125 case '<':
126 memcpy(&(dest[dp]), "&lt;", 4);
127 dp += 4;
128 break;
129 case '>':
130 memcpy(&(dest[dp]), "&gt;", 4);
131 dp += 4;
132 break;
133 default:
134 dest[dp++] = c;
135 }
136 }
137 dest[dp] = 0;
138 }
139
111 void printhelp() { 140 void printhelp() {
112 printf("Formats source code using HTML.\n\nUsage:\n" 141 printf("Formats source code using HTML.\n\nUsage:\n"
113 " c2html [FILE...]" 142 " c2html [FILE...]"
114 "\n"); 143 "\n");
115 144
116 145
117 } 146 }
118 147
119 int lnw(size_t lnc) { 148 int lnint(size_t lnc) {
120 int w = 1, p = 1; 149 int w = 1, p = 1;
121 while ((p*=10) < lnc) w++; 150 while ((p*=10) < lnc) w++;
122 return w; 151 return w;
123 } 152 }
124 153
130 } else { 159 } else {
131 160
132 inputfile_t *inputfile = readinput(argv[1]); 161 inputfile_t *inputfile = readinput(argv[1]);
133 if (inputfile) { 162 if (inputfile) {
134 printf("<pre>\n"); 163 printf("<pre>\n");
164 char *line = (char*) malloc(inputfile->maxlinewidth*64);
165 int lnw = lnint(inputfile->count);
135 for (int i = 0 ; i < inputfile->count ; i++) { 166 for (int i = 0 ; i < inputfile->count ; i++) {
167 parseline(inputfile->lines[i], line);
136 printf("<span class=\"c2html-lineno\">%*d:</span> %s\n", 168 printf("<span class=\"c2html-lineno\">%*d:</span> %s\n",
137 lnw(inputfile->count), i, inputfile->lines[i]); 169 lnw, i, line);
138 } 170 }
171 free(line);
139 printf("</pre>\n"); 172 printf("</pre>\n");
140 freeinputfilebuffer(inputfile); 173 freeinputfilebuffer(inputfile);
141 } 174 }
142 175
143 return 0; 176 return 0;

Mercurial Repository: c2html

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