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buffer.c
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/*
quIRC - simple terminal-based IRC client
Copyright (C) 2010-13 Edward Cree
See quirc.c for license information
buffer: multiple-buffer control & buffer rendering
*/
#include <stdint.h>
#include "buffer.h"
#include "logging.h"
#include "osconf.h"
#include "ctbuf.h"
#include "strbuf.h"
#include "ttyesc.h"
#include "bits.h"
#include "names.h"
#include "text.h"
#include "version.h"
int nbufs;
int cbuf;
buffer *bufs;
ring s_buf, d_buf;
ctchar *highlight(const char *src, size_t *len); // use colours to highlight \escapes. Returns a malloc-like pointer
int init_ring(ring *r)
{
r->nlines=64;
r->ptr=0;
r->filled=false;
r->loop=false;
r->lt=malloc(r->nlines*sizeof(char *));
r->ltag=malloc(r->nlines*sizeof(char *));
r->lm=malloc(r->nlines*sizeof(mtype));
r->ts=malloc(r->nlines*sizeof(time_t));
r->errs=0;
return(0);
}
int add_to_ring(ring *r, mtype lm, const char *lt, const char *ltag)
{
if(!r->nlines) init_ring(r);
int p=r->ptr;
if(!(++r->ptr<r->nlines))
{
if(r->loop)
{
r->filled=true;
r->ptr-=r->nlines;
}
else
{
r->ptr=p;
r->errs++;
return(1);
}
}
r->lt[p]=strdup(lt);
r->ltag[p]=strdup(ltag);
r->lm[p]=lm;
r->ts[p]=time(NULL);
return(0);
}
int atr_failsafe(ring *r, mtype lm, const char *lt, const char *ltag)
{
int e=0;
if((e=add_to_ring(r, lm, lt, ltag)))
{
fprintf(stderr, "atr[%d]: %s%s\n", e, ltag, lt);
}
return(e);
}
int free_ring(ring *r)
{
int i;
if(r->lt)
{
for(i=0;i<(r->filled?r->nlines:r->ptr);i++)
{
free(r->lt[i]);
}
free(r->lt);
r->lt=NULL;
}
if(r->ltag)
{
for(i=0;i<(r->filled?r->nlines:r->ptr);i++)
{
free(r->ltag[i]);
}
free(r->ltag);
r->ltag=NULL;
}
free(r->lm);
free(r->ts);
r->nlines=0;
return(0);
}
int initialise_buffers(int buflines)
{
bufs=malloc(sizeof(buffer));
if(!bufs)
return(1);
init_buffer(0, STATUS, "status", buflines); // buf 0 is always STATUS
nbufs=1;
cbuf=0;
bufs[0].live=true; // STATUS is never dead
bufs[0].nick=nick;
nick=NULL;
bufs[0].ilist=igns;
add_to_buffer(0, STA, QUIET, 0, false, GPL_TAIL, "quirc -- ");
init_ring(&d_buf);
d_buf.loop=true;
return(0);
}
int init_buffer(int buf, btype type, const char *bname, int nlines)
{
bufs[buf].type=type;
bufs[buf].bname=strdup(bname);
if(type==SERVER)
bufs[buf].serverloc=strdup(bname);
else
bufs[buf].serverloc=NULL;
bufs[buf].realsname=NULL;
bufs[buf].nlist=NULL;
bufs[buf].us=NULL;
bufs[buf].ilist=NULL;
bufs[buf].handle=0;
bufs[buf].server=0;
bufs[buf].nick=NULL;
bufs[buf].topic=NULL;
bufs[buf].logf=NULL;
bufs[buf].nlines=nlines;
bufs[buf].ptr=0;
bufs[buf].scroll=0;
bufs[buf].ascroll=0;
bufs[buf].lm=malloc(nlines*sizeof(mtype));
bufs[buf].lq=malloc(nlines*sizeof(prio));
bufs[buf].lp=malloc(nlines);
bufs[buf].ls=malloc(nlines*sizeof(bool));
bufs[buf].lt=malloc(nlines*sizeof(char *));
int i;
for(i=0;i<bufs[buf].nlines;i++)
{
bufs[buf].lt[i]=NULL;
}
bufs[buf].ltag=malloc(nlines*sizeof(char *));
for(i=0;i<bufs[buf].nlines;i++)
{
bufs[buf].ltag[i]=NULL;
}
bufs[buf].lpl=malloc(nlines*sizeof(int));
bufs[buf].lpc=malloc(nlines*sizeof(colour));
bufs[buf].lpt=malloc(nlines*sizeof(char **));
for(i=0;i<nlines;i++)
{
bufs[buf].lpl[i]=0;
bufs[buf].lpc[i]=(colour){.fore=7, .back=0, .hi=false, .ul=false};
bufs[buf].lpt[i]=NULL;
}
bufs[buf].dirty=false;
bufs[buf].ts=malloc(nlines*sizeof(time_t));
bufs[buf].filled=false;
bufs[buf].alert=false;
bufs[buf].hi_alert=0;
bufs[buf].ping=0;
bufs[buf].last=time(NULL);
bufs[buf].namreply=false;
bufs[buf].live=false;
bufs[buf].conninpr=false;
initibuf(&bufs[buf].input);
bufs[buf].casemapping=RFC1459;
if(type==SERVER)
{
bufs[buf].npfx=2;
bufs[buf].prefixes=malloc(2*sizeof(prefix));
bufs[buf].prefixes[0]=(prefix){.letter='o', .pfx='@'};
bufs[buf].prefixes[1]=(prefix){.letter='v', .pfx='+'};
}
else
{
bufs[buf].npfx=0;
bufs[buf].prefixes=NULL;
}
bufs[buf].autoent=NULL;
bufs[buf].conf=conf;
bufs[buf].key=NULL;
bufs[buf].lastkey=NULL;
return(0);
}
int free_buffer(int buf)
{
if(bufs[buf].live)
{
add_to_buffer(buf, ERR, NORMAL, 0, false, "Buffer is still live!", "free_buffer:");
return(1);
}
else
{
free(bufs[buf].bname);
free(bufs[buf].serverloc);
free(bufs[buf].realsname);
n_free(bufs[buf].nlist);
bufs[buf].nlist=NULL;
n_free(bufs[buf].ilist);
bufs[buf].ilist=NULL;
free(bufs[buf].nick);
free(bufs[buf].topic);
if(bufs[buf].logf)
fclose(bufs[buf].logf);
free(bufs[buf].lm);
free(bufs[buf].lq);
free(bufs[buf].lp);
free(bufs[buf].ls);
int l;
if(bufs[buf].lt)
{
for(l=0;l<bufs[buf].nlines;l++)
free(bufs[buf].lt[l]);
free(bufs[buf].lt);
}
if(bufs[buf].ltag)
{
for(l=0;l<bufs[buf].nlines;l++)
free(bufs[buf].ltag[l]);
free(bufs[buf].ltag);
}
if(bufs[buf].lpt)
{
for(l=0;l<bufs[buf].nlines;l++)
{
if(bufs[buf].lpt[l])
{
if(bufs[buf].lpl)
{
int p;
for(p=0;p<bufs[buf].lpl[l];p++)
{
free(bufs[buf].lpt[l][p]);
}
}
free(bufs[buf].lpt[l]);
}
}
free(bufs[buf].lpt);
}
free(bufs[buf].lpl);
free(bufs[buf].lpc);
free(bufs[buf].ts);
freeibuf(&bufs[buf].input);
free(bufs[buf].prefixes);
free(bufs[buf].key);
free(bufs[buf].lastkey);
if(cbuf>=buf)
cbuf--;
nbufs--;
int b;
for(b=buf;b<nbufs;b++)
{
bufs[b]=bufs[b+1];
}
for(b=0;b<nbufs;b++)
{
if(bufs[b].server==buf)
{
bufs[b].server=0; // orphaned; should not happen
bufs[b].live=false;
bufs[b].handle=0; // just in case
}
else if(bufs[b].server>buf)
{
bufs[b].server--;
}
}
if(nbufs) redraw_buffer();
return(0);
}
}
int add_to_buffer(int buf, mtype lm, prio lq, char lp, bool ls, const char *lt, const char *ltag)
{
if(buf>=nbufs)
{
if(bufs&&buf)
{
add_to_buffer(0, ERR, NORMAL, 0, false, "Line was written to bad buffer! Contents below.", "add_to_buffer(): ");
add_to_buffer(0, lm, NORMAL, lp, ls, lt, ltag);
}
return(1);
}
if(!debug&&(lq==DEBUG))
{
if(!d_buf.nlines)
{
init_ring(&d_buf);
d_buf.loop=true;
}
return(add_to_ring(&d_buf, lm, lt, ltag));
}
int optr=bufs[buf].ptr;
bool scrollisptr=(bufs[buf].scroll==bufs[buf].ptr)&&(bufs[buf].ascroll==0);
bufs[buf].lm[bufs[buf].ptr]=lm;
bufs[buf].lq[bufs[buf].ptr]=lq;
bufs[buf].lp[bufs[buf].ptr]=lp;
bufs[buf].ls[bufs[buf].ptr]=ls;
free(bufs[buf].lt[bufs[buf].ptr]);
bufs[buf].lt[bufs[buf].ptr]=strdup(lt);
free(bufs[buf].ltag[bufs[buf].ptr]);
bufs[buf].ltag[bufs[buf].ptr]=strdup(ltag);
time_t ts=bufs[buf].ts[bufs[buf].ptr]=time(NULL);
bufs[buf].ptr=(bufs[buf].ptr+1)%bufs[buf].nlines;
if(scrollisptr)
{
bufs[buf].scroll=bufs[buf].ptr;
bufs[buf].ascroll=0;
}
if(bufs[buf].ptr==0)
bufs[buf].filled=true;
render_line(buf, optr);
if(buf==cbuf)
{
int e=redraw_buffer();
if(e) return(e);
}
else
{
if(!(
(bufs[buf].conf&&((lm==JOIN)||(lm==PART)||(lm==NICK)||(lm==MODE)||(lm==QUIT)))
||
(quiet&&(lq==QUIET))
||
(!debug&&(lq==DEBUG))
))
bufs[buf].alert=true;
}
if(bufs[buf].logf)
{
int e=log_add(bufs[buf].logf, bufs[buf].logt, lm, lq, lp, ls, lt, ltag, ts);
if(e) return(e);
}
return(0);
}
int redraw_buffer(void)
{
if(bufs[cbuf].dirty)
{
int e=render_buffer(cbuf);
if(e) return(e);
if(bufs[cbuf].dirty) return(1);
}
int uline=bufs[cbuf].scroll;
int pline=bufs[cbuf].ascroll;
while(pline<0)
{
uline--;
if((bufs[cbuf].filled)&&(uline==bufs[cbuf].ptr))
{
uline++;
pline=0;
break;
}
if(uline<0)
{
if(bufs[cbuf].filled)
uline+=bufs[cbuf].nlines;
else
{
uline=0;
pline=0;
break;
}
}
pline+=bufs[cbuf].lpl[uline];
}
if(uline==bufs[cbuf].ptr)
{
pline=0;
}
while(pline>=bufs[cbuf].lpl[uline])
{
pline-=bufs[cbuf].lpl[uline];
if(bufs[cbuf].filled)
{
if(uline==bufs[cbuf].ptr)
{
pline=0;
break;
}
uline=(uline+1)%bufs[cbuf].nlines;
}
else
{
if(uline>=bufs[cbuf].ptr)
{
uline=bufs[cbuf].ptr;
pline=0;
break;
}
uline++;
}
}
bufs[cbuf].scroll=uline;
bufs[cbuf].ascroll=pline;
int row=height-2;
//setcolour(bufs[cbuf].lpc[uline]);
while(row>(tsb?1:0))
{
bool breakit=false;
pline--;
while(pline<0)
{
uline--;
if(uline<0)
{
if(bufs[cbuf].filled)
uline+=bufs[cbuf].nlines;
else
{
breakit=true;
pline=0;
break;
}
}
if(uline==bufs[cbuf].ptr)
{
breakit=true;
break;
}
pline+=bufs[cbuf].lpl[uline];
}
if(breakit) break;
locate(row, 0);
fputs(bufs[cbuf].lpt[uline][pline], stdout);
if(!full_width_colour) resetcol();
clr();
row--;
}
resetcol();
while(row>(tsb?1:0))
{
locate(row--, 0);
clr();
}
switch(bufs[cbuf].type)
{
case STATUS:
settitle("quIRC - status");
break;
case SERVER: // have to scope it for the cstr 'variably modified type'
{
char cstr[16+strlen(bufs[cbuf].bname)];
sprintf(cstr, "quIRC - %s", bufs[cbuf].bname);
settitle(cstr);
}
break;
case CHANNEL: // have to scope it for the cstr 'variably modified type'
{
char cstr[16+strlen(bufs[cbuf].bname)+strlen(SERVER(cbuf).bname)];
sprintf(cstr, "quIRC - %s on %s", bufs[cbuf].bname, SERVER(cbuf).bname);
settitle(cstr);
}
break;
case PRIVATE: // have to scope it for the cstr 'variably modified type'
{
char cstr[16+strlen(bufs[cbuf].bname)+strlen(SERVER(cbuf).bname)];
sprintf(cstr, "quIRC - <%s> on %s", bufs[cbuf].bname, SERVER(cbuf).bname);
settitle(cstr);
}
break;
default:
settitle("quIRC");
break;
}
if(tsb)
titlebar();
bufs[cbuf].alert=false;
return(0);
}
int mark_buffer_dirty(int buf)
{
bufs[buf].dirty=true;
return(0);
}
int render_buffer(int buf)
{
if(!bufs[buf].dirty) return(0); // nothing to do...
int uline,e=0;
for(uline=0;uline<(bufs[buf].filled?bufs[buf].nlines:bufs[buf].ptr);uline++)
{
e|=render_line(buf, uline);
if(e) return(e);
}
bufs[buf].dirty=e; // mark it clean
return(e);
}
int render_line(int buf, int uline)
{
if(bufs[buf].lpt[uline])
{
int pline;
for(pline=0;pline<bufs[buf].lpl[uline];pline++)
free(bufs[buf].lpt[uline][pline]);
free(bufs[buf].lpt[uline]);
}
if( // this is quite a complicated conditional, so I've split it up. It handles conference mode, quiet mode and debug mode
(bufs[buf].conf&&(
(bufs[buf].lm[uline]==JOIN)
||(bufs[buf].lm[uline]==PART)
||(bufs[buf].lm[uline]==NICK)
||(bufs[buf].lm[uline]==MODE)
||(bufs[buf].lm[uline]==QUIT)
)
)
||
(quiet&&(bufs[buf].lq[uline]==QUIET))
||
(!debug&&(bufs[buf].lq[uline]==DEBUG))
)
{
bufs[buf].lpt[uline]=NULL;
bufs[buf].lpl[uline]=0;
return(0);
}
char *tag=strdup(bufs[buf].ltag[uline]?bufs[buf].ltag[uline]:"");
bool mergetype=((bufs[buf].lm[uline]==JOIN)&&*tag)||(bufs[buf].lm[uline]==PART)||(bufs[buf].lm[uline]==QUIT);
bool merged=false;
if(merge&&(bufs[buf].type==CHANNEL)&&mergetype)
{
int prevline=uline;
while(1)
{
if(--prevline<0)
{
prevline+=bufs[buf].nlines;
if(!bufs[buf].filled) break;
}
if(fabs(difftime(bufs[buf].ts[prevline], bufs[buf].ts[uline]))>5) break;
if(bufs[buf].lm[prevline]==bufs[buf].lm[uline])
{
if((bufs[buf].lm[uline]==QUIT)&&strcmp(bufs[buf].lt[uline], bufs[buf].lt[prevline])) break;
const char *ltag=bufs[buf].ltag[prevline];
if(!ltag) ltag="";
if((bufs[buf].lm[uline]==JOIN)&&!*ltag) break;
size_t nlen=strlen(tag)+strlen(ltag)+2;
char *ntag=malloc(nlen);
snprintf(ntag, nlen, "%s=%s", ltag, tag);
free(tag);
tag=ntag;
int pline;
for(pline=0;pline<bufs[buf].lpl[prevline];pline++)
free(bufs[buf].lpt[prevline][pline]);
free(bufs[buf].lpt[prevline]);
bufs[buf].lpt[prevline]=NULL;
bufs[buf].lpl[prevline]=0;
merged=true;
continue;
}
break;
}
}
char *message=strdup(bufs[buf].lt[uline]);
char *proc;size_t l,i;
init_char(&proc, &l, &i);
char stamp[STAMP_LEN];
timestamp(stamp, bufs[buf].ts[uline]);
colour c={.fore=7, .back=0, .hi=false, .ul=false};
switch(bufs[buf].lm[uline])
{
case MSG:
{
c=c_msg[bufs[buf].ls[uline]?0:1];
char mk[6]="<%s> ";
if(show_prefix&&bufs[buf].lp[uline])
{
mk[0]=mk[3]=bufs[buf].lp[uline];
}
crush(&tag, maxnlen);
char *ntag=mktag(mk, tag);
free(tag);
tag=ntag;
}
break;
case NOTICE:
{
c=c_notice[bufs[buf].ls[uline]?0:1];
if(*tag)
{
crush(&tag, maxnlen);
char *ntag=mktag("(%s) ", tag);
free(tag);
tag=ntag;
}
}
break;
case PREFORMAT:
c=c_notice[bufs[buf].ls[uline]?0:1];
break;
case ACT:
{
c=c_actn[bufs[buf].ls[uline]?0:1];
crush(&tag, maxnlen);
char *ntag=mktag("* %s ", tag);
free(tag);
tag=ntag;
}
break;
case JOIN:
c=c_join[bufs[buf].ls[uline]?0:1];
if(tag&&*tag)
{
free(message);
const char *bn=bufs[buf].bname;
if(!bn) bn="the channel";
size_t l=16+strlen(bn);
message=malloc(l);
if(merged)
snprintf(message, l, "have joined %s", bufs[buf].bname);
else
snprintf(message, l, "has joined %s", bufs[buf].bname);
}
goto eqtag;
case PART:
c=c_part[bufs[buf].ls[uline]?0:1];
if(tag&&*tag)
{
free(message);
const char *bn=bufs[buf].bname;
if(!bn) bn="the channel";
size_t l=16+strlen(bn);
message=malloc(l);
if(merged)
snprintf(message, l, "have left %s", bufs[buf].bname);
else
snprintf(message, l, "has left %s", bufs[buf].bname);
}
goto eqtag;
case QUIT:
c=c_quit[bufs[buf].ls[uline]?0:1];
if(tag&&*tag)
{
const char *bn=bufs[buf].bname;
if(!bn) bn="the channel";
size_t l=16+strlen(bn)+strlen(message);
char *nmessage=malloc(l);
if(merged)
snprintf(nmessage, l, "have left %s (%s)", bufs[buf].bname, message);
else
snprintf(nmessage, l, "has left %s (%s)", bufs[buf].bname, message);
free(message);
message=nmessage;
}
goto eqtag;
case QUIT_PREFORMAT:
c=c_quit[bufs[buf].ls[uline]?0:1];
break;
case NICK:
{
c=c_nick[bufs[buf].ls[uline]?0:1];
eqtag:
if(!merge)
crush(&tag, maxnlen);
char *ntag=mktag("=%s= ", tag);
free(tag);
tag=ntag;
}
break;
case MODE:
c=c_nick[bufs[buf].ls[uline]?0:1];
break;
case STA:
c=c_status;
break;
case ERR:
c=c_err;
break;
case UNK:
c=c_unk;
break;
case UNK_NOTICE:
c=c_unk;
if(*tag)
{
crush(&tag, maxnlen);
char *ntag=mktag("(%s) ", tag);
free(tag);
tag=ntag;
}
break;
case UNN:
c=c_unn;
break;
default:
break;
}
int x=wordline(stamp, 0, &proc, &l, &i, c);
x=wordline(tag, indent?x:0, &proc, &l, &i, c);
free(tag);
wordline(message, indent?x:0, &proc, &l, &i, c);
free(message);
bufs[buf].lpl[uline]=0;
bufs[buf].lpt[uline]=NULL;
bufs[buf].lpc[uline]=c;
char *curr=strtok(proc, "\n");
while(curr)
{
int pline=bufs[buf].lpl[uline]++;
char **nlpt=realloc(bufs[buf].lpt[uline], bufs[buf].lpl[uline]*sizeof(char *));
if(!nlpt)
{
add_to_buffer(0, ERR, NORMAL, 0, false, "realloc failed; buffer may be corrupted", "render_buffer: ");
free(proc);
return(1);
}
(bufs[buf].lpt[uline]=nlpt)[pline]=strdup(curr);
curr=strtok(NULL, "\n");
}
free(proc);
return(0);
}
void in_update(iline inp)
{
height=max(height, 5); // anything less than this is /silly/
width=max(width, 30); // widths less than 30 break things, and are /also silly/
resetcol();
locate(height-1, 1);
// tab strip
int mbw = (width-1)/nbufs;
if(mbw>1)
{
int b;
for(b=0;b<nbufs;b++)
{
colour c={7, hilite_tabstrip?5:0, false, false};
setcolour(c);
putchar(' ');
// (status) {server} [channel] <user>
char brack[2]={'!', '!'};
switch(bufs[b].type)
{
case STATUS:
brack[0]='(';brack[1]=')';
break;
case SERVER:
brack[0]='{';brack[1]='}';
break;
case CHANNEL:
brack[0]='[';brack[1]=']';
break;
case PRIVATE:
brack[0]='<';brack[1]='>';
break;
}
if(b==cbuf)
{
c.back=2; // green
c.hi=true;
}
else if(b==bufs[cbuf].server)
{
c.back=4; // blue
c.ul=true;
}
if(bufs[b].hi_alert%2)
{
c.fore=6; // cyan
c.hi=true;
}
else if(bufs[b].alert)
{
c.fore=1; // red
c.hi=true;
}
if((!LIVE(b)) && (c.fore!=6))
{
c.fore=3; // yellow
c.hi=true;
}
setcolour(c);
putchar(brack[0]);
if(mbw>3)
{
char *tab=strdup(bufs[b].bname);
if(bufs[b].type==SERVER)
{
scrush(&tab, mbw-3);
}
else
{
crush(&tab, mbw-3);
}
printf("%s", tab);
free(tab);
}
if(mbw>2)
putchar(brack[1]);
c.fore=7;
c.back=hilite_tabstrip?5:0;
c.hi=c.ul=false;
setcolour(c);
}
}
else
{
setcolour((colour){.fore=0, .back=1, .hi=true, .ul=false});
printf("buf %u [0 to %u]", cbuf, nbufs-1);
}
clr();
resetcol();
putchar('\n');
unsigned int wwidth=width;
char stamp[STAMP_LEN];
stamp[0]=0;
if(its)
{
timestamp(stamp, time(NULL));
if(strlen(stamp)+25>wwidth)
{
stamp[0]=0;
its=false;
add_to_buffer(0, STA, NORMAL, 0, false, "disabled due to insufficient display width", "its: ");
}
wwidth-=strlen(stamp);
}
// input
size_t ll, rl;
ctchar *left =highlight(inp.left .data?inp.left .data:"", &ll),
*right=highlight(inp.right.data?inp.right.data:"", &rl);
if(ll+rl+1<wwidth)
{
fputs(stamp, stdout);
ct_puts(left);
savepos();
ct_puts(right);
resetcol();
clr();
restpos();
}
else
{
if(ll<wwidth*0.75)
{
fputs(stamp, stdout);
ct_puts(left);
savepos();
ct_putsn(right, wwidth-ll-4-max(3, (wwidth-ll)/4));
resetcol();
fputs("...", stdout);
ct_puts(right+rl-max(3, (wwidth-ll)/4));
resetcol();
clr();
restpos();
}
else if(rl<wwidth*0.75)
{
fputs(stamp, stdout);
ct_putsn(left, max(3, (wwidth-rl)/4));
resetcol();
fputs("...", stdout);
ct_puts(left+ll-wwidth+4+rl+max(3, (wwidth-rl)/4));
savepos();
ct_puts(right);
resetcol();
clr();
restpos();
}
else
{
int torem=floor((wwidth/4.0)*floor(((ll-(wwidth/2.0))*4.0/wwidth)+0.5));
torem=min(torem, (int)ll-3);
size_t c=ll+4-torem;
fputs(stamp, stdout);
ct_putsn(left, max(3, c/4)+1);
resetcol();
fputs("...", stdout);
ct_puts(left+torem+max(3, c/4)+1);
savepos();
ct_putsn(right, wwidth-c-3-max(3, (wwidth-c)/4));
resetcol();
fputs("...", stdout);
ct_puts(right+rl-max(3, (wwidth-c)/4));
resetcol();
clr();
restpos();
}
}
free(left);
free(right);
fflush(stdout);
}
ctchar *highlight(const char *src, size_t *len)
{
size_t l,i,u;ctchar *rv;
ct_init_char(&rv, &l, &i);
while(*src)
{
if(*src=='\\')
{
switch(src[1])
{
case 'n':
ct_append_char_c(&rv, &l, &i, (colour){7, 0, 1, 0}, '\\');
ct_append_char(&rv, &l, &i, 'n');
src++;
break;
case 'r':
ct_append_char_c(&rv, &l, &i, (colour){7, 0, 1, 0}, '\\');
ct_append_char(&rv, &l, &i, 'r');
src++;
break;
case '\\':
ct_append_char_c(&rv, &l, &i, (colour){3, 0, 1, 0}, '\\');
ct_append_char(&rv, &l, &i, '\\');
src++;
break;
case 0:
ct_append_char_c(&rv, &l, &i, (colour){4, 0, 1, 0}, '\\');
break;
case '0':
case '1':
case '2':
case '3':
ct_append_char_c(&rv, &l, &i, (colour){6, 0, 1, 0}, '\\');
ct_append_char(&rv, &l, &i, *++src);
int digits=0;
while(isdigit(src[1])&&(src[1]<'8')&&(++digits<3))
ct_append_char(&rv, &l, &i, *++src);
break;
default:
ct_append_char_c(&rv, &l, &i, (colour){1, 0, 1, 0}, '\\');
break;
}
}
else if(isutf8(src, &u))
{
ct_append_char_c(&rv, &l, &i, (colour){7, 0, 0, 0}, *src);
while(--u)
ct_append_char(&rv, &l, &i, *++src);
}
else if(!isprint(*src))
{
ct_append_char_c(&rv, &l, &i, (colour){2, 0, 1, 0}, '\\');
char obuf[16];
snprintf(obuf, 16, "%03o", (unsigned char)*src);
ct_append_str(&rv, &l, &i, obuf);
}
else
{
ct_append_char_c(&rv, &l, &i, (colour){7, 0, 0, 0}, *src);
}
src++;
}
if(len) *len=i;
return(rv);
}
int e_buf_print(int buf, mtype lm, message pkt, const char *lead)
{
int arg;
int len=(pkt.prefix?strlen(pkt.prefix):0)+strlen(pkt.cmd)+8;
for(arg=0;arg<pkt.nargs;arg++)
{
len+=strlen(pkt.args[arg])+3;
}
char text[len];
if(pkt.prefix)
{
strcpy(text, pkt.prefix);
}
else
{
*text=0;
}
strcat(text, " : ");
strcat(text, pkt.cmd);
for(arg=0;arg<pkt.nargs;arg++)
{
strcat(text, " _ ");
strcat(text, pkt.args[arg]);
}
return(add_to_buffer(buf, lm, QUIET, 0, false, text, lead));
}
int transfer_ring(ring *r, prio lq)
{
int i,e=0;
if(r->filled)