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#include "wily.h"
#include "data.h"
static int data_getstat (Data*, char*, char*, Stat*);
static void data_opennew (Data*, char*, char*path);
static int data_getdir (Data*, char*, char*, Stat*);
static int data_getfile (Data*, char*, char*, Stat*);
static void data_settag (Data*, char*);
static Data * data_alloc (void);
/*
* Open a new 'data' to represent 'label'. Either read 'label', or if
* it doesn't exist and 'create' is set, return an empty window to
* represent where we _will_ write it.
*
* Return (View*)0 if 'label' exists but we can't read it, or it doesn't
* exist and we don't want to create it.
*/
View*
data_open(char*label, Bool create) {
Data *d;
Stat buf;
Path path;
Bool failure;
label2path(path, label);
d = data_alloc();
failure = false;
if(stat(path,&buf)) { /* doesn't exist -- yet */
if(create)
data_opennew(d, label, path);
else
failure = true;
} else {
failure = data_getstat(d, label, path,&buf);
}
if(failure){
data_listremove(d);
free(d);
return 0;
} else {
if(d->names)
add_slash(path);
data_settag(d, path);
win_new(path, d->tag, d->t);
return text_view(d->t);
}
}
/*
* Read file or directory 'label' into 'd'.
* Return 0 for success.
*/
int
data_get(Data *d, char *label) {
Stat buf;
Path path;
if(data_backup(d))
return -1; /* If we did this, we'd lose data */
if(!label)
label = d->label; /* is strcpy(a,a) bad? */
label2path(path,label);
if(stat(path,&buf)){
diag(0, "Couldn't stat [%s (%s)]", path, label);
return -1;
} else {
return data_getstat(d, label, path, &buf);
}
}
/* Load 'd' with 'path', which has stat buffer 'buf'.
* Returns 0 if we loaded succesfully.
*/
static int
data_getstat(Data*d, char* label, char*path, Stat*buf) {
int failed;
cursorswitch(&boxcursor);
bflush();
undo_reset(d->t);
failed = S_ISDIR(buf->st_mode) ?
data_getdir(d, label, path, buf) :
data_getfile(d, label, path, buf);
undo_start(d->t);
if(!failed)
undo_mark(d->t);
cursorswitch(cursor);
return failed;
}
/* Load 'd' with new file 'path'. */
static void
data_opennew(Data*d, char*label, char*path) {
/* d */
pathcontract(d->label, label);
strcpy(d->cachedlabel, d->label);
d->has_stat = false;
data_setbackup(d, path);
dirnames_free(d->names);
d->names = 0;
/* d->t */
text_replace(d->t, text_all(d->t), rstring(0,0));
undo_start(d->t);
undo_mark(d->t);
/* d->tag */
tag_setlabel(d->tag, d->label);
tag_rmtool(d->tag, "Put");
}
/* Load 'd' with directory 'path', which has stat buffer 'buf'.
* Returns 0 if we loaded succesfully.
*/
static int
data_getdir(Data*d, char*label, char*path, Stat*buf) {
DIR* dirp;
if(!(dirp = opendir(path))) {
diag(path, "opendir [%s]", path);
return -1; /* failure - modify nothing */
}
/* d */
pathcontract(d->label,label);
add_slash(d->label);
strcpy(d->cachedlabel, d->label);
d->has_stat = true;
d->stat = *buf;
data_setbackup(d,0);
dirnames_free(d->names);
d->names = dirnames(dirp, path);
/* d->t */
text_formatdir(d->t, d->names);
/* d->tag */
tag_rmtool(d->tag, "Put");
tag_addtool(d->tag, "Get");
tag_setlabel(d->tag, d->label);
return 0;
}
/* Load 'd' with file 'path', which has stat buffer 'buf'.
* Returns 0 if we loaded succesfully.
*/
static int
data_getfile(Data*d, char*label, char*path, Stat*buf) {
int fd;
extern Bool utfHadNulls;
if(!(fd = open(path, O_RDONLY))) {
diag(path, "open [%s]", path);
return -1; /* failure - modify nothing */
}
/* d */
pathcontract(d->label, label);
strcpy(d->cachedlabel, d->label);
d->has_stat = true;
d->stat = *buf;
data_setbackup(d,path);
dirnames_free(d->names);
d->names = 0;
/* d->t */
text_read(d->t, fd, buf->st_size);
close(fd);
if (utfHadNulls) {
diag(path, "removed nulls from [%s]", path);
data_setbackup(d,0);
}
/* d->tag */
tag_rmtool(d->tag, "Put");
tag_rmtool(d->tag, "Get");
tag_setlabel(d->tag, d->label);
return 0;
}
/* Fill 'buf' with appropriate stuff for d's tag */
static void
data_settag(Data*d, char *path) {
Path buf;
char*common;
char*specific;
common = d->names? dirtools : filetools;
specific = tag_match(path);
sprintf (buf, "%s | %s %s ", d->label, common, specific);
tag_set(d->tag, buf);
}
static Data *
data_alloc(void) {
Data *d;
static Id id;
d = NEW(Data);
d->id = id++;
d->next = dataroot;
dataroot = d;
d->t = text_alloc(d, true);
d->tag = text_alloc(d, false);
d->names = 0;
d->backupto = 0;
d->fd = 0;
d->emask = 0;
d->has_stat = false;
strcpy(d->label, "");
strcpy(d->cachedlabel, "");
return d;
}
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