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changed whole newline handling

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gottox@rootkit.lan 2007-12-13 21:23:45 +01:00
parent 9f24a7669b
commit e1fc11840a
1 changed files with 75 additions and 66 deletions
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141
cmarkdown.c
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@ -15,7 +15,7 @@
{ b = realloc(b,((i + 1)+ BUFFERSIZE) * sizeof(b)); if(!b) eprint("Malloc failed."); }; b[i+1] = '\0'; b[i] { b = realloc(b,((i + 1)+ BUFFERSIZE) * sizeof(b)); if(!b) eprint("Malloc failed."); }; b[i+1] = '\0'; b[i]
typedef unsigned int (*Parser)(const char *, const char *); typedef unsigned int (*Parser)(const char *, const char *, int);
struct Tag { struct Tag {
char *search; char *search;
int process; int process;
@ -25,29 +25,32 @@ struct Tag {
void eprint(const char *format, ...); /* Prints error and exits */ void eprint(const char *format, ...); /* Prints error and exits */
void hprint(const char *begin, const char *end); /* escapes HTML and prints it to stdout*/ void hprint(const char *begin, const char *end); /* escapes HTML and prints it to stdout*/
unsigned int doamp(const char *begin, const char *end); /* Parser for & */ unsigned int doamp(const char *begin, const char *end, int first);
unsigned int dohtml(const char *begin, const char *end); /* Parser for & */
unsigned int dohtml(const char *begin, const char *end, int first);
/* Parser for html */ /* Parser for html */
unsigned int dolineprefix(const char *begin, const char *end); unsigned int dolineprefix(const char *begin, const char *end, int first);
/* Parser for line prefix tags */ /* Parser for line prefix tags */
unsigned int dolink(const char *begin, const char *end); unsigned int dolink(const char *begin, const char *end, int first);
/* Parser for links and images */ /* Parser for links and images */
unsigned int dolist(const char *begin, const char *end); unsigned int dolist(const char *begin, const char *end, int first);
/* Parser for lists */ /* Parser for lists */
unsigned int doparagraph(const char *begin, const char *end); unsigned int doparagraph(const char *begin, const char *end, int first);
/* Parser for paragraphs */ /* Parser for paragraphs */
unsigned int doreplace(const char *begin, const char *end); unsigned int doreplace(const char *begin, const char *end, int first);
/* Parser for simple replaces */ /* Parser for simple replaces */
unsigned int doshortlink(const char *begin, const char *end); unsigned int doshortlink(const char *begin, const char *end, int first);
/* Parser for links and images */ /* Parser for links and images */
unsigned int dosurround(const char *begin, const char *end); unsigned int dosurround(const char *begin, const char *end, int first);
/* Parser for surrounding tags */ /* Parser for surrounding tags */
unsigned int dounderline(const char *begin, const char *end); unsigned int dounderline(const char *begin, const char *end, int first);
/* Parser for underline tags */ /* Parser for underline tags */
void process(const char *begin, const char *end); /* Processes range between begin and end. */ void process(const char *begin, const char *end, int isblock);
/* Processes range between begin and end. */
Parser parsers[] = { dounderline, dohtml, dolineprefix, dolist, doparagraph, Parser parsers[] = { dounderline, dohtml, dolineprefix, dolist, doparagraph,
dosurround, dolink, doshortlink, doamp, doreplace }; /* list of parsers */ dosurround, dolink, doshortlink, doamp, doreplace }; /* list of parsers */
//Parser parsers[] = { doparagraph };
FILE *source; FILE *source;
unsigned int bsize = 0, nohtml = 0; unsigned int bsize = 0, nohtml = 0;
struct Tag lineprefix[] = { struct Tag lineprefix[] = {
@ -114,7 +117,7 @@ hprint(const char *begin, const char *end) {
} }
unsigned int unsigned int
doamp(const char *begin, const char *end) { doamp(const char *begin, const char *end, int first) {
const char *p; const char *p;
if(*begin != '&') if(*begin != '&')
@ -128,7 +131,7 @@ doamp(const char *begin, const char *end) {
return 1; return 1;
} }
unsigned int unsigned int
dohtml(const char *begin, const char *end) { dohtml(const char *begin, const char *end, int first) {
const char *p, *tag, *tagend; const char *p, *tag, *tagend;
if(nohtml || *begin != '\n' || !*begin) if(nohtml || *begin != '\n' || !*begin)
return 0; return 0;
@ -153,15 +156,15 @@ dohtml(const char *begin, const char *end) {
return 0; return 0;
} }
unsigned int unsigned int
dolineprefix(const char *begin, const char *end) { dolineprefix(const char *begin, const char *end, int first) {
unsigned int i, j, l; unsigned int i, j, l;
char *buffer; char *buffer;
const char *p; const char *p;
if(*begin != '\n' || !*begin) if(*begin != '\n' && !first)
return 0; return 0;
p = begin; p = begin;
if(p[1] == '\n') if(!first)
p++; p++;
for(i = 0; i < LENGTH(lineprefix); i++) { for(i = 0; i < LENGTH(lineprefix); i++) {
l = strlen(lineprefix[i].search); l = strlen(lineprefix[i].search);
@ -183,7 +186,7 @@ dolineprefix(const char *begin, const char *end) {
} }
ADDC(buffer,j) = '\0'; ADDC(buffer,j) = '\0';
if(lineprefix[i].process) if(lineprefix[i].process)
process(buffer,buffer+strlen(buffer)); process(buffer,buffer+strlen(buffer),1);
else else
hprint(buffer,buffer+strlen(buffer)); hprint(buffer,buffer+strlen(buffer));
printf("</%s>\n",lineprefix[i].tag); printf("</%s>\n",lineprefix[i].tag);
@ -194,7 +197,7 @@ dolineprefix(const char *begin, const char *end) {
} }
unsigned int unsigned int
dolink(const char *begin, const char *end) { dolink(const char *begin, const char *end, int first) {
int img; int img;
const char *desc, *link, *p, *q, *r, *descend, *linkend; const char *desc, *link, *p, *q, *r, *descend, *linkend;
@ -217,50 +220,49 @@ dolink(const char *begin, const char *end) {
linkend = p; linkend = p;
if(img) { if(img) {
fputs("<img src=\"",stdout); fputs("<img src=\"",stdout);
process(link,linkend); hprint(link,linkend);
fputs("\" alt=\"",stdout); fputs("\" alt=\"",stdout);
process(desc,descend); hprint(desc,descend);
fputs("\" />",stdout); fputs("\" />",stdout);
} }
else { else {
fputs("<a href=\"",stdout); fputs("<a href=\"",stdout);
process(link,linkend); hprint(link,linkend);
fputs("\">",stdout); fputs("\">",stdout);
process(desc,descend); process(desc,descend,0);
fputs("</a>",stdout); fputs("</a>",stdout);
} }
return p + 1 - begin; return p + 1 - begin;
} }
unsigned int unsigned int
dolist(const char *begin, const char *end) { dolist(const char *begin, const char *end, int first) {
unsigned int i,j,k,indent,run,ul; unsigned int i,j,indent,run,ul, isblock;
const char *p, *q; const char *p, *q;
char *buffer; char *buffer;
if(*begin != '\n') if(*begin != '\n' && !first)
return 0; return 0;
p = begin; p = begin;
if(p[1] == '\n') if(!first)
p++; p++;
q = p; q = p;
if((p[1] == '-' || p[1] == '*' || p[1] == '+') && p[2] == ' ') { if((*p == '-' || *p == '*' || *p == '+') && p[1] == ' ') {
ul = 1; ul = 1;
p++;
} }
else { else {
ul = 0; ul = 0;
for(p++; *p && p != end && *p >= '0' && *p <= '9';p++); for(; *p && p != end && *p >= '0' && *p <= '9';p++);
if(!*p || p[0] != '.' || p[1] != ' ') if(!*p || p[0] != '.' || p[1] != ' ')
return 0; return 0;
} }
for(p++; *p && p != end && *p == ' '; p++); for(p++; *p && p != end && *p == ' '; p++);
indent = p - q - 1; indent = p - q;
if(!(buffer = malloc(BUFFERSIZE))) if(!(buffer = malloc(BUFFERSIZE)))
eprint("Malloc failed."); eprint("Malloc failed.");
puts(ul ? "\n<ul>" : "\n<ol>"); fputs(ul ? "<ul>\n" : "<ol>\n",stdout);
run = 1; run = 1;
for(i = 0; *p && p < end && run; p++) { for(i = 0; *p && p < end && run; p++) {
buffer[0] = '\0'; buffer[0] = '\0';
@ -298,36 +300,39 @@ dolist(const char *begin, const char *end) {
ADDC(buffer,i) = *p; ADDC(buffer,i) = *p;
} }
fputs("<li>",stdout); fputs("<li>",stdout);
process(buffer,buffer+i); process(buffer,buffer+i,0); //TODO
fputs("</li>\n",stdout); fputs("</li>\n",stdout);
} }
puts(ul ? "</ul>" : "</ol>"); fputs(ul ? "</ul>\n" : "</ol>\n",stdout);
free(buffer); free(buffer);
p--; p--;
while(*(--p) == '\n'); while(*(--p) == '\n');
return p + 1 - begin; return p - begin + 1;
} }
unsigned int unsigned int
doparagraph(const char *begin, const char *end) { doparagraph(const char *begin, const char *end, int first) {
const char *p; const char *p, *q;
if(strncmp(begin,"\n\n",2)) if(first)
p = begin;
else if(*begin == '\n')
p = begin + 1;
else
return 0; return 0;
if(!(p = strstr(begin + 2,"\n\n"))) q = strchr(p, '\n');
p = end - 1; if(!q || q > end)
if(p > end) q = end;
if(q - begin <= 1)
return 0; return 0;
if(p - begin - 2 <= 0) fputs("<p>",stdout);
return 0; process(p,q,0);
fputs("\n<p>",stdout);
process(begin+2,p);
fputs("</p>\n",stdout); fputs("</p>\n",stdout);
return p - begin; return q - begin;
} }
unsigned int unsigned int
doreplace(const char *begin, const char *end) { doreplace(const char *begin, const char *end, int first) {
unsigned int i, l; unsigned int i, l;
for(i = 0; i < LENGTH(insert); i++) for(i = 0; i < LENGTH(insert); i++)
@ -346,7 +351,7 @@ doreplace(const char *begin, const char *end) {
} }
unsigned int unsigned int
doshortlink(const char *begin, const char *end) { doshortlink(const char *begin, const char *end, int first) {
const char *p, *c; const char *p, *c;
int ismail = 0; int ismail = 0;
@ -390,7 +395,7 @@ doshortlink(const char *begin, const char *end) {
} }
unsigned int unsigned int
dosurround(const char *begin, const char *end) { dosurround(const char *begin, const char *end, int first) {
unsigned int i,l; unsigned int i,l;
const char *p,*ps; const char *p,*ps;
@ -408,7 +413,7 @@ dosurround(const char *begin, const char *end) {
continue; continue;
printf("<%s>",surround[i].tag); printf("<%s>",surround[i].tag);
if(surround[i].process) if(surround[i].process)
process(begin + strlen(surround[i].search), p); process(begin + strlen(surround[i].search), p,0);
else else
hprint(begin + strlen(surround[i].search), p); hprint(begin + strlen(surround[i].search), p);
printf("</%s>",surround[i].tag); printf("</%s>",surround[i].tag);
@ -418,31 +423,30 @@ dosurround(const char *begin, const char *end) {
} }
unsigned int unsigned int
dounderline(const char *begin, const char *end) { dounderline(const char *begin, const char *end, int first) {
unsigned int i, j, l, nl; unsigned int i, j, l, nl;
const char *p; const char *p;
if(*begin != '\n' && *begin != '\0') if(*begin != '\n' && !first)
return 0; return 0;
nl = 0;
p = begin; p = begin;
if(p[1] == '\n') { nl = 0;
if(!first) {
nl = 1; nl = 1;
p++; p++;
} }
for(p++,l = 0; p[l] != '\n' && p[l] && p+l != end; l++); for(l = 0; p[l] != '\n' && p[l] && p+l != end; l++);
p += l + 1; p += l + 1;
if(l == 0) if(l == 0)
return 0; return 0;
for(i = 0; i < LENGTH(underline); i++) { for(i = 0; i < LENGTH(underline); i++) {
for(j = 0; p[j] != '\n' && p[j] == underline[i].search[0] && p+j != end; j++); for(j = 0; p[j] != '\n' && p[j] == underline[i].search[0] && p+j != end; j++);
if(j >= l) { if(j >= l) {
putchar('\n');
printf("<%s>",underline[i].tag); printf("<%s>",underline[i].tag);
if(underline[i].process) if(underline[i].process)
process(begin + 1 + nl, begin + l + 1 + nl); process(begin + nl, begin + l + nl, 0);
else else
hprint(begin + 1 + nl, begin + l + 1 + nl); hprint(begin + nl, begin + l + nl);
printf("</%s>\n",underline[i].tag); printf("</%s>\n",underline[i].tag);
return j + p - begin; return j + p - begin;
} }
@ -451,17 +455,21 @@ dounderline(const char *begin, const char *end) {
} }
void void
process(const char *begin, const char *end) { process(const char *begin, const char *end, int isblock) {
const char *p, *q; const char *p, *q;
int affected; int affected;
unsigned int i; unsigned int i;
for(p = begin; *p && p < end;) { for(p = begin; *p && *p == '\n' && p < end;p++);
for(; *p && p < end;) {
affected = 0; affected = 0;
for(i = 0; i < LENGTH(parsers) && affected == 0; i++) for(i = 0; i < LENGTH(parsers) && affected == 0; i++)
affected = parsers[i](p, end); affected = parsers[i](p, end, isblock);
if(affected) if(affected) {
p += affected; p += affected;
while(*p+1 == '\n')
p++;
}
else { else {
for(q = p; *q == '\n' && q != end; q++); for(q = p; *q == '\n' && q != end; q++);
if(q != end && *q) { if(q != end && *q) {
@ -472,6 +480,7 @@ process(const char *begin, const char *end) {
} }
p++; p++;
} }
isblock = 0;
} }
} }
@ -492,8 +501,8 @@ main(int argc, char *argv[]) {
if(!(buffer = malloc(BUFFERSIZE))) if(!(buffer = malloc(BUFFERSIZE)))
eprint("Malloc failed."); eprint("Malloc failed.");
bsize = BUFFERSIZE; bsize = BUFFERSIZE;
/* needed to properly process first line */ buffer[0] = '\0';
strcpy(buffer,"\n");
p = buffer+strlen(buffer); p = buffer+strlen(buffer);
while(s = fread(p, sizeof(char),BUFFERSIZE, source)) { while(s = fread(p, sizeof(char),BUFFERSIZE, source)) {
@ -505,7 +514,7 @@ main(int argc, char *argv[]) {
eprint("Malloc failed."); eprint("Malloc failed.");
} }
} }
process(buffer,buffer+strlen(buffer)); process(buffer,buffer+strlen(buffer),1);
putchar('\n'); putchar('\n');
free(buffer); free(buffer);
} }