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/* sel.c */
/* This file provides the function set_selections() to accept package
* names on stdin. (Note that the function is meant to be called only
* when the corresponding command-line option has been invoked.)
*
*/
#include "sel.h"
#include "alloc.h"
#include "gen.h"
struct hsearch_data sel;
int set_selections( void ) {
int n_sel = 0;
char name[SEL_SIZE_LINE+2];
if ( !hcreate_r( HASH_SIZE, &sel ) ) error(
EPERM, 0,
"cannot create selection hash"
);
while ( fgets( name, SEL_SIZE_LINE+2, stdin ) ) {
if ( !strchr( name, '\n' ) )
error( EIO, 0, "%s\n%s", SEL_IO_ERROR_MSG, name );
/* Skip blank lines. */
if ( isspace(*name) ) {
char *p = name;
while (*++p) if ( !isspace(*p) )
error( EIO, 0, "%s\n%s", SEL_IO_ERROR_MSG, name );
continue;
}
/* Truncate the input line to the read the package name only. */
{
int possible_dpkg_format = 0;
char *p = name;
while ( !isspace(*p) ) ++p;
if ( *p != '\n' ) possible_dpkg_format = 1;
*p++ = '\0';
if ( possible_dpkg_format ) {
while ( isspace(*p) && *p != '\n' ) ++p;
if ( *p != '\n' ) {
char *q = p;
while ( !isspace(*q) ) ++q;
*q++ = '\0';
while (*q) if ( !isspace(*q++) )
error( EIO, 0, "%s\n%s", SEL_IO_ERROR_MSG, name );
if (
ENFORCE_STR_DPKG_INSTALL
&& strcmp( STR_DPKG_INSTALL, p )
) goto set_selections_end_input_line;
}
}
}
/* Record the package name. (On the wishlist: Replace the rigid
* old-style hash here with a more flexible modern hash.) */
{
ENTRY entry, *ep;
entry.key = malloc2( strlen(name) + 1 );
strcpy( entry.key, name );
entry.data = 0;
if ( !hsearch_r( entry, ENTER, &ep, &sel ) ) error(
ENOMEM, 0,
"too many package names to -s"
);
}
++n_sel;
set_selections_end_input_line:;
}
return n_sel;
}
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