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#include "wily.h"
#include "data.h"
#include <errno.h>
Data *dataroot;
Text*
data_body(Data*d) {
return d->t;
}
Text*
data_tag(Data*d){
return d->tag;
}
/* Return the names in directory 'd', or 0 */
char**
data_names(Data*d){
return d?d->names:0;
}
/* Return true if 'd' should have its resize box filled in */
Bool
data_isdirty(Data *d) {
return d && NEEDSBACKUP(d);
}
/* Write all dirty windows. Return 0 for success. */
int
data_putall(void) {
Data *d;
int retval = 0;
for(d=dataroot; d; d=d->next)
if(NEEDSBACKUP(d))
if (data_put(d,0))
retval = -1;
return retval;
}
/* Backup all dirty files. Return 0 unless we failed to backup something. */
int
data_backupall(void) {
Data *d;
int retval= 0;
for(d = dataroot; d; d = d->next) {
if (data_backup(d)) {
retval = 1;
}
}
return retval;
}
/*
* Write the contents of 'd' to 'path'.
* Return 0 if we've successfully written 'd' to its label.
*/
int
data_put(Data *d, char *label) {
int fd;
Stat buf;
Path path;
Bool statfailed, writefailed;
if(!label)
label = d->label;
label2path(path, label);
statfailed = stat(path, &buf);
if((fd = open(path,O_RDWR|O_CREAT|O_TRUNC, 0666))<0){
diag(path, "couldn't open \"%s\" for write", path);
return -1;
}
writefailed = text_write_range(d->t, text_all(d->t), fd);
close(fd);
if(writefailed) {
diag(path, "write failed: \"%s\"", path);
return -1;
}
if (!strcmp(d->label,label) || !statcmp(&buf, &d->stat)) {
if(!d->names) {
tag_rmtool(d->tag, "Put");
undo_mark(d->t);
}
return 0;
}
return -1;
}
void
data_listremove(Data *d) {
Data **ptr;
for(ptr = &dataroot; *ptr != d; ptr = &((*ptr)->next))
;
*ptr = d->next;
}
/* Delete 'd' if we can do so without permanently losing
* data, and return 0. If there's a problem, return 1.
*/
int
data_del(Data*d) {
if(data_backup(d))
return 1;
data_senddestroy(d);
data_listremove(d);
dirnames_free(d->names);
if(d->backupto)
free(d->backupto);
free(d);
return 0;
}
/* Backup 'd' if necessary. Return 0 for success. */
int
data_backup(Data *d) {
Path fname;
if (!NEEDSBACKUP(d))
return 0;
if( (backup_name(d->backupto, fname)) )
return -1;
if(text_write(d->t, fname))
return -1;
errno = 0;
diag(fname, "backup %s %s", mybasename(fname), d->backupto);
return 0;
}
/* Record that in emergencies, 'd' should be saved, noting
* that it is a copy of 'bfile'
*/
void
data_setbackup(Data *d, char*bfile) {
if(d->backupto)
free(d->backupto);
if(bfile && !strstr(bfile, "+Errors")) {
d->backupto = strdup(bfile);
text_setneedsbackup(d->t, true);
} else {
d->backupto = 0;
text_setneedsbackup(d->t, false);
};
}
Data *
data_findid(Id id) {
Data *d;
for(d=dataroot; d; d=d->next)
if(d->id==id)
break;
return d;
}
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