ref: 5622b0bbd878dbc34045cc6fd37cffa64461eabe
dir: /sys/src/cmd/wikifs/parsehist.c/
/*
* Read a Wiki history file.
* It's a title line then a sequence of Wiki files separated by headers.
*
* Ddate/time
* #body
* #...
* #...
* #...
* etc.
*/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <String.h>
#include <thread.h>
#include "wiki.h"
static char*
Brdwline(void *vb, int sep)
{
Biobufhdr *b;
char *p;
b = vb;
if(Bgetc(b) == '#'){
if(p = Brdline(b, sep))
p[Blinelen(b)-1] = '\0';
return p;
}else{
Bungetc(b);
return nil;
}
}
Whist*
Brdwhist(Biobuf *b)
{
int i, current, conflict, c, n;
char *author, *comment, *p, *title;
ulong t;
Wdoc *w;
Whist *h;
if((p = Brdline(b, '\n')) == nil){
werrstr("short read: %r");
return nil;
}
p[Blinelen(b)-1] = '\0';
p = strcondense(p, 1);
title = estrdup(p);
w = nil;
n = 0;
t = -1;
author = nil;
comment = nil;
conflict = 0;
current = 0;
while((c = Bgetc(b)) != Beof){
if(c != '#'){
p = Brdline(b, '\n');
if(p == nil)
break;
p[Blinelen(b)-1] = '\0';
switch(c){
case 'D':
t = strtoul(p, 0, 10);
break;
case 'A':
free(author);
author = estrdup(p);
break;
case 'C':
free(comment);
comment = estrdup(p);
break;
case 'X':
conflict = 1;
}
} else { /* c=='#' */
Bungetc(b);
if(n%8 == 0)
w = erealloc(w, (n+8)*sizeof(w[0]));
w[n].time = t;
w[n].author = author;
w[n].comment = comment;
comment = nil;
author = nil;
w[n].wtxt = Brdpage(Brdwline, b);
w[n].conflict = conflict;
if(w[n].wtxt == nil)
goto Error;
if(!conflict)
current = n;
n++;
conflict = 0;
t = -1;
}
}
if(w==nil)
goto Error;
free(comment);
free(author);
h = emalloc(sizeof *h);
h->title = title;
h->doc = w;
h->ndoc = n;
h->current = current;
incref(h);
setmalloctag(h, getcallerpc(&b));
return h;
Error:
free(title);
free(author);
free(comment);
for(i=0; i<n; i++){
free(w[i].author);
free(w[i].comment);
freepage(w[i].wtxt);
}
free(w);
return nil;
}