/* Return pointer to copy of shell command in the command buffer */
static const char * get_shell_command( const char ** const ibufpp )
{
static char * buf = 0;
static int bufsz = 0;
static char * shcmd = 0; /* shell command buffer */
static int shcmdsz = 0; /* shell command buffer size */
static int shcmdlen = 0; /* shell command length */
const char * p; /* substitution char pointer */
int i = 0, len;
if( restricted() ) { set_error_msg( "Shell access restricted" ); return 0; }
if( !get_extended_line( ibufpp, &len, true ) ) return 0;
p = *ibufpp;
if( !resize_buffer( &buf, &bufsz, len + 1 ) ) return 0;
buf[i++] = '!'; /* prefix command w/ bang */
while( **ibufpp != '\n' )
{
if( **ibufpp == '!' )
{
if( p != *ibufpp )
{
if( !resize_buffer( &buf, &bufsz, i + 1 ) ) return 0;
buf[i++] = *(*ibufpp)++;
}
else if( !shcmd || ( traditional() && !*( shcmd + 1 ) ) )
{ set_error_msg( "No previous command" ); return 0; }
else
{
if( !resize_buffer( &buf, &bufsz, i + shcmdlen ) ) return 0;
for( p = shcmd + 1; p < shcmd + shcmdlen; ) buf[i++] = *p++;
p = (*ibufpp)++;
}
}
else if( **ibufpp == '%' )
{
if( !def_filename[0] )
{ set_error_msg( "No current filename" ); return 0; }
p = strip_escapes( def_filename );
len = strlen( p );
if( !resize_buffer( &buf, &bufsz, i + len ) ) return 0;
while( len-- ) buf[i++] = *p++;
p = (*ibufpp)++;
}
else
{
if( !resize_buffer( &buf, &bufsz, i + 2 ) ) return 0;
buf[i++] = **ibufpp;
if( *(*ibufpp)++ == '\\' ) buf[i++] = *(*ibufpp)++;
}
}
while( **ibufpp == '\n' ) ++*ibufpp; /* skip newline */
if( !resize_buffer( &shcmd, &shcmdsz, i + 1 ) ) return 0;
memcpy( shcmd, buf, i );
shcmdlen = i; shcmd[i] = 0;
if( *p == '!' || *p == '%' ) printf( "%s\n", shcmd + 1 );
return shcmd;
}
static GList *add_result(GList *results, cb_object *capo, char *url, char *summary, char *release)
{
if(levenshtein_strnormcmp(capo->s, capo->s->album, release) <= capo->s->fuzzyness) {
if(strlen(summary) >= 125) {
GlyrMemCache *result = DL_init();
result->data = g_strdup_printf("%s\n \n \nRead more on: %s\n", summary, url);
result->size = strlen(result->data);
result->size -= strip_escapes(result->data, result->size);
return g_list_prepend(results, result);
}
}
return results;
}
/* write_file: write a range of lines to a named file/pipe; return line count */
long
write_file(char *fn, const char *mode, long n, long m)
{
FILE *fp;
long size;
fp = (*fn == '!') ? popen(fn+1, "w") : fopen(strip_escapes(fn), mode);
if (fp == NULL) {
fprintf(stderr, "%s: %s\n", fn, strerror(errno));
errmsg = "cannot open output file";
return ERR;
} else if ((size = write_stream(fp, n, m)) < 0)
return ERR;
else if (((*fn == '!') ? pclose(fp) : fclose(fp)) < 0) {
fprintf(stderr, "%s: %s\n", fn, strerror(errno));
errmsg = "cannot close output file";
return ERR;
}
fprintf(stdout, !scripted ? "%lu\n" : "", size);
return n ? m - n + 1 : 0;
}
/* write_file: write a range of lines to a named file/pipe; return line count */
int
write_file(char *fn, char *mode, int n, int m)
{
FILE *fp;
int size;
fp = (*fn == '!') ? popen(fn+1, "w") : fopen(strip_escapes(fn), mode);
if (fp == NULL) {
perror(fn);
seterrmsg("cannot open output file");
return ERR;
} else if ((size = write_stream(fp, n, m)) < 0)
return ERR;
else if (((*fn == '!') ? pclose(fp) : fclose(fp)) < 0) {
perror(fn);
seterrmsg("cannot close output file");
return ERR;
}
fprintf(stderr, !scripted ? "%d\n" : "", size);
return n ? m - n + 1 : 0;
}
/* read_file: read a named file/pipe into the buffer; return line count */
long
read_file(char *fn, long n)
{
FILE *fp;
long size;
fp = (*fn == '!') ? popen(fn + 1, "r") : fopen(strip_escapes(fn), "r");
if (fp == NULL) {
fprintf(stderr, "%s: %s\n", fn, strerror(errno));
errmsg = "cannot open input file";
return ERR;
} else if ((size = read_stream(fp, n)) < 0)
return ERR;
else if (((*fn == '!') ? pclose(fp) : fclose(fp)) < 0) {
fprintf(stderr, "%s: %s\n", fn, strerror(errno));
errmsg = "cannot close input file";
return ERR;
}
fprintf(stdout, !scripted ? "%lu\n" : "", size);
return current_addr - n;
}
/* read_file: read a named file/pipe into the buffer; return line count */
int
read_file(char *fn, int n)
{
FILE *fp;
int size;
fp = (*fn == '!') ? popen(fn + 1, "r") : fopen(strip_escapes(fn), "r");
if (fp == NULL) {
perror(fn);
seterrmsg("cannot open input file");
return ERR;
} else if ((size = read_stream(fp, n)) < 0)
return ERR;
else if (((*fn == '!') ? pclose(fp) : fclose(fp)) < 0) {
perror(fn);
seterrmsg("cannot close input file");
return ERR;
}
fprintf(stderr, !scripted ? "%d\n" : "", size);
return current_addr - n;
}
/* execute the next command in command buffer; return error status */
static int exec_command( const char ** const ibufpp, const int prev_status,
const bool isglobal )
{
const char * fnp;
int gflags = 0;
int addr, c, n;
const int addr_cnt = extract_addr_range( ibufpp );
if( addr_cnt < 0 ) return ERR;
*ibufpp = skip_blanks( *ibufpp );
c = *(*ibufpp)++;
switch( c )
{
case 'a': if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !append_lines( ibufpp, second_addr, isglobal ) ) return ERR;
break;
case 'c': if( first_addr == 0 ) first_addr = 1;
if( second_addr == 0 ) second_addr = 1;
if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !delete_lines( first_addr, second_addr, isglobal ) ||
!append_lines( ibufpp, current_addr(), isglobal ) ) return ERR;
break;
case 'd': if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !delete_lines( first_addr, second_addr, isglobal ) ) return ERR;
inc_current_addr();
break;
case 'e': if( modified() && !scripted() && prev_status != EMOD )
return EMOD; /* fall through */
case 'E': if( unexpected_address( addr_cnt ) ||
unexpected_command_suffix( **ibufpp ) ) return ERR;
fnp = get_filename( ibufpp );
if( !fnp || !delete_lines( 1, last_addr(), isglobal ) ||
!close_sbuf() ) return ERR;
if( !open_sbuf() ) return FATAL;
if( fnp[0] && fnp[0] != '!' ) set_def_filename( fnp );
if( traditional() && !fnp[0] && !def_filename[0] )
{ set_error_msg( "No current filename" ); return ERR; }
if( read_file( fnp[0] ? fnp : def_filename, 0 ) < 0 )
return ERR;
reset_undo_state(); set_modified( false );
break;
case 'f': if( unexpected_address( addr_cnt ) ||
unexpected_command_suffix( **ibufpp ) ) return ERR;
fnp = get_filename( ibufpp );
if( !fnp ) return ERR;
if( fnp[0] == '!' )
{ set_error_msg( "Invalid redirection" ); return ERR; }
if( fnp[0] ) set_def_filename( fnp );
printf( "%s\n", strip_escapes( def_filename ) );
break;
case 'g':
case 'v':
case 'G':
case 'V': if( isglobal )
{ set_error_msg( "Cannot nest global commands" ); return ERR; }
n = ( c == 'g' || c == 'G' ); /* mark matching lines */
if( !check_addr_range( 1, last_addr(), addr_cnt ) ||
!build_active_list( ibufpp, first_addr, second_addr, n ) )
return ERR;
n = ( c == 'G' || c == 'V' ); /* interactive */
if( ( n && !get_command_suffix( ibufpp, &gflags ) ) ||
!exec_global( ibufpp, gflags, n ) )
return ERR;
break;
case 'h':
case 'H': if( unexpected_address( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( c == 'H' ) verbose = !verbose;
if( ( c == 'h' || verbose ) && errmsg[0] )
fprintf( stderr, "%s\n", errmsg );
break;
case 'i': if( second_addr == 0 ) second_addr = 1;
if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !append_lines( ibufpp, second_addr - 1, isglobal ) )
return ERR;
break;
case 'j': if( !check_addr_range( current_addr(), current_addr() + 1, addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( first_addr != second_addr &&
!join_lines( first_addr, second_addr, isglobal ) ) return ERR;
break;
case 'k': n = *(*ibufpp)++;
if( second_addr == 0 ) { invalid_address(); return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ||
!mark_line_node( search_line_node( second_addr ), n ) )
return ERR;
break;
case 'l':
case 'n':
case 'p': if( c == 'l' ) n = GLS; else if( c == 'n' ) n = GNP; else n = GPR;
if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ||
!display_lines( first_addr, second_addr, gflags | n ) )
return ERR;
gflags = 0;
break;
case 'm': if( !check_current_addr( addr_cnt ) ||
!get_third_addr( ibufpp, &addr ) ) return ERR;
if( addr >= first_addr && addr < second_addr )
{ set_error_msg( "Invalid destination" ); return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !move_lines( first_addr, second_addr, addr, isglobal ) )
return ERR;
break;
case 'P':
case 'q':
case 'Q': if( unexpected_address( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( c == 'P' ) prompt_on = !prompt_on;
else if( modified() && !scripted() && c == 'q' &&
prev_status != EMOD ) return EMOD;
else return QUIT;
break;
case 'r': if( unexpected_command_suffix( **ibufpp ) ) return ERR;
if( addr_cnt == 0 ) second_addr = last_addr();
fnp = get_filename( ibufpp );
if( !fnp ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !def_filename[0] && fnp[0] != '!' ) set_def_filename( fnp );
if( traditional() && !fnp[0] && !def_filename[0] )
{ set_error_msg( "No current filename" ); return ERR; }
addr = read_file( fnp[0] ? fnp : def_filename, second_addr );
if( addr < 0 ) return ERR;
if( addr ) set_modified( true );
break;
case 's': if( !command_s( ibufpp, &gflags, addr_cnt, isglobal ) )
return ERR;
break;
case 't': if( !check_current_addr( addr_cnt ) ||
!get_third_addr( ibufpp, &addr ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !copy_lines( first_addr, second_addr, addr ) ) return ERR;
break;
case 'u': if( unexpected_address( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ||
!undo( isglobal ) ) return ERR;
break;
case 'w':
case 'W': n = **ibufpp;
if( n == 'q' || n == 'Q' ) ++*ibufpp;
if( unexpected_command_suffix( **ibufpp ) ) return ERR;
fnp = get_filename( ibufpp );
if( !fnp ) return ERR;
if( addr_cnt == 0 && last_addr() == 0 )
first_addr = second_addr = 0;
else if( !check_addr_range( 1, last_addr(), addr_cnt ) )
return ERR;
if( !def_filename[0] && fnp[0] != '!' ) set_def_filename( fnp );
if( traditional() && !fnp[0] && !def_filename[0] )
{ set_error_msg( "No current filename" ); return ERR; }
addr = write_file( fnp[0] ? fnp : def_filename,
( c == 'W' ) ? "a" : "w", first_addr, second_addr );
if( addr < 0 ) return ERR;
if( addr == last_addr() ) set_modified( false );
else if( modified() && !scripted() && n == 'q' &&
prev_status != EMOD ) return EMOD;
if( n == 'q' || n == 'Q' ) return QUIT;
break;
case 'x': if( second_addr < 0 || last_addr() < second_addr )
{ invalid_address(); return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !put_lines( second_addr ) ) return ERR;
break;
case 'y': if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ||
!yank_lines( first_addr, second_addr ) ) return ERR;
break;
case 'z': first_addr = 1;
if( !check_addr_range( first_addr, current_addr() +
( traditional() || !isglobal ), addr_cnt ) )
return ERR;
if( **ibufpp > '0' && **ibufpp <= '9' )
{ if( parse_int( &n, *ibufpp, ibufpp ) ) set_window_lines( n );
else return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ||
!display_lines( second_addr, min( last_addr(), second_addr + window_lines() ),
gflags ) )
return ERR;
gflags = 0;
break;
case '=': if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
printf( "%d\n", addr_cnt ? second_addr : last_addr() );
break;
case '!': if( unexpected_address( addr_cnt ) ) return ERR;
fnp = get_shell_command( ibufpp );
if( !fnp ) return ERR;
if( system( fnp + 1 ) < 0 )
{ set_error_msg( "Can't create shell process" ); return ERR; }
if( !scripted() ) printf( "!\n" );
break;
case '\n': first_addr = 1;
if( !check_addr_range( first_addr, current_addr() +
( traditional() || !isglobal ), addr_cnt ) ||
!display_lines( second_addr, second_addr, 0 ) )
return ERR;
break;
case '#': while( *(*ibufpp)++ != '\n' ) ;
break;
default : set_error_msg( "Unknown command" ); return ERR;
}
if( gflags && !display_lines( current_addr(), current_addr(), gflags ) )
return ERR;
return 0;
}