security-and-privacy/gnupg
security-and-privacy/gnupg
1
0
Fork 0
mirror of git://git.gnupg.org/gnupg.git synced 2025-07-03 22:56:33 +02:00
Code Activity

See ChangeLog: Sun Jan 17 11:04:33 CET 1999 Werner Koch

Browse source
This commit is contained in:
Werner Koch 1999-01-17 10:06:03 +00:00
parent 38008c1c20
commit befacf7efa
19 changed files with 199 additions and 156 deletions
Download patch file Download diff file Expand all files Collapse all files

117
g10/textfilter.c
View file

@ -30,72 +30,10 @@
#include "memory.h"
#include "util.h"
#include "filter.h"
#include "i18n.h"
static int
read_line( byte *buf, size_t *r_buflen, IOBUF a )
{
int c;
int rc = 0;
byte *p;
size_t buflen;
int no_lf=0;
size_t n;
buflen = *r_buflen;
assert(buflen >= 20 );
buflen -= 3; /* leave some room for CR,LF and one extra */
for(c=0, n=0; n < buflen && (c=iobuf_get(a)) != -1 && c != '\n'; )
buf[n++] = c;
buf[n] = 0;
if( c == -1 ) {
rc = -1;
if( !n || buf[n-1] != '\n' )
no_lf = 1;
}
else if( c != '\n' ) {
IOBUF b = iobuf_temp();
while( (c=iobuf_get(a)) != -1 && c != '\n' ) {
iobuf_put(b,c);
if( c != ' ' && c != '\t' && c != '\r' )
break;
}
if( c == '\n' ) { /* okay we can skip the rest of the line */
iobuf_close(b);
}
else {
iobuf_unget_and_close_temp(a,b);
no_lf = 1;
}
}
if( !no_lf ) {
/* append CR,LF after removing trailing wspaces */
for(p=buf+n-1; n; n--, p-- ) {
assert( *p != '\n' );
if( *p != ' ' && *p != '\t' && *p != '\r' ) {
p[1] = '\r';
p[2] = '\n';
n += 2;
break;
}
}
if( !n ) {
buf[0] = '\r';
buf[1] = '\n';
n = 2;
}
}
*r_buflen = n;
return rc;
}
#define MAX_LINELEN 20000
/****************
@ -109,33 +47,52 @@ text_filter( void *opaque, int control,
size_t size = *ret_len;
text_filter_context_t *tfx = opaque;
int rc=0;
size_t len, n, nn;
if( control == IOBUFCTRL_UNDERFLOW ) {
assert( size > 30 );
len = 0;
size_t len = 0;
unsigned maxlen;
assert( size > 10 );
size -= 2; /* reserve 2 bytes to append CR,LF */
while( !rc && len < size ) {
if( tfx->idx < tfx->len ) { /* flush the last buffer */
n = tfx->len;
for(nn=tfx->idx; len < size && nn < n ; nn++ )
buf[len++] = tfx->buf[nn];
tfx->idx = nn;
int lf_seen;
while( len < size && tfx->buffer_pos < tfx->buffer_len )
buf[len++] = tfx->buffer[tfx->buffer_pos++];
if( len >= size )
continue;
/* read the next line */
maxlen = MAX_LINELEN;
tfx->buffer_pos = 0;
tfx->buffer_len = iobuf_read_line( a, &tfx->buffer,
&tfx->buffer_size, &maxlen );
if( !maxlen )
tfx->truncated++;
if( !tfx->buffer_len ) {
if( !len )
rc = -1; /* eof */
break;
}
if( tfx->eof ) {
rc = -1;
continue;
lf_seen = tfx->buffer[tfx->buffer_len-1] == '\n';
tfx->buffer_len = trim_trailing_ws( tfx->buffer, tfx->buffer_len );
if( lf_seen ) {
tfx->buffer[tfx->buffer_len++] = '\r';
tfx->buffer[tfx->buffer_len++] = '\n';
}
n = DIM(tfx->buf);
tfx->idx = 0;
if( read_line( tfx->buf, &n, a ) == -1 )
tfx->eof = 1;
tfx->len = n;
}
*ret_len = len;
}
else if( control == IOBUFCTRL_DESC )
*(char**)buf = "text_filter";
else if( control == IOBUFCTRL_FREE ) {
if( tfx->truncated )
log_error(_("can't handle text lines longer than %d characters\n"),
MAX_LINELEN );
m_free( tfx->buffer );
tfx->buffer = NULL;
}
return rc;
}