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/*
* (c) Copyright 1990, Kim Fabricius Storm. All rights reserved.
*
* Directory access.
* read file names in directory 'dir' starting with 'prefix'
*/
#include "config.h"
#include "articles.h"
#include "dir.h"
/* dir.c */
static sort_directory __APROTO((register char **f1, register char **f2));
static char dir_path[FILENAME], *dir_tail;
#ifdef HAVE_DIRECTORY
static string_marker str_mark;
static char **completions = NULL;
static char **comp_iterator;
static char **comp_help;
/*
* list_directory scans the directory twice; first time to find out how
* many matches there are, and second time to save the names, after
* sufficient memory have been allocated to store it all.
*/
static int
sort_directory(f1, f2) /* Used by qsort */
register char **f1;
register char **f2;
{
return strcmp(*f1, *f2);
}
int
list_directory(dir, prefix)
char *dir, *prefix;
{
DIR *dirp;
register Direntry *dp;
register char *cp;
register char **comp = NULL;
int pflen = strlen(prefix);
unsigned count = 0, comp_length = 0;
if ((dirp = opendir(dir)) == NULL)
return 0; /* tough luck */
mark_str(&str_mark);
while ((dp = readdir(dirp)) != NULL) {
cp = dp->d_name;
#ifdef FAKED_DIRECTORY
if (dp->d_ino == 0) continue;
cp[14] = NUL;
#endif
if (*cp == '.' && (cp[1] == '\0' || (cp[1] == '.' && cp[2] == '\0')))
continue;
if (pflen && strncmp(prefix, cp, pflen)) continue;
if (count == comp_length) {
comp_length += 100;
completions = resizeobj(completions, char *, comp_length + 1);
comp = completions + count;
}
strcpy(*comp++ = alloc_str(strlen(cp)), cp);
count++;
}
closedir(dirp);
if (count == 0) {
release_str(&str_mark);
return 0;
}
quicksort(completions, count, char *, sort_directory);
*comp = (char *)0;
comp_iterator = completions;
comp_help = completions;
dir_tail = dir_path;
while ((*dir_tail++ = *dir++));
dir_tail[-1] = '/';
return 1;
}
int
next_directory(buffer, add_slash)
register char *buffer;
int add_slash;
{
if (*comp_iterator != NULL) {
strcpy(buffer, *comp_iterator);
if (add_slash) {
strcpy(dir_tail, *comp_iterator);
if (file_exist(dir_path, "d"))
strcat(buffer, "/");
}
comp_iterator++;
return 1;
}
close_directory();
return 0;
}
int
compl_help_directory()
{
list_completion((char *)NULL);
if (*comp_help == NULL) comp_help = completions;
while (*comp_help && list_completion(*comp_help))
comp_help++;
fl;
return 1;
}
void
close_directory()
{
if (completions) {
release_str(&str_mark);
freeobj(completions);
completions = NULL;
}
}
#else
static FILE *dirf;
static int prefix_lgt;
list_directory(dir, prefix)
char *dir, *prefix;
{
if (prefix[0])
sprintf(dir_path, "cd %s && echo %s* 2>/dev/null", dir, prefix);
else
sprintf(dir_path, "cd %s && ls 2>/dev/null", dir);
prefix_lgt = strlen(prefix);
if ((dirf = popen(dir_path, "r")) == NULL) return 0;
dir_tail = dir_path;
while (*dir_tail++ = *dir++);
dir_tail[-1] = '/';
return 1;
}
next_directory(buffer, add_slash)
char *buffer;
int add_slash;
{
register char *cp;
register int c;
cp = buffer;
while ((c = getc(dirf)) != EOF && (c != SP) && (c != NL))
*cp++ = c;
if (cp != buffer) {
*cp = NUL;
if (strcmp(buffer + prefix_lgt, "*")) {
if (!add_slash) return 1;
strcpy(dir_tail, buffer);
if (file_exist(dir_path, "d")) {
*cp++ = '/';
*cp = NUL;
}
return 1;
}
}
close_directory();
return 0;
}
compl_help_directory()
{
return 0;
}
close_directory()
{
if (dirf) {
pclose(dirf);
dirf = NULL;
}
}
#endif /* HAVE_DIRECTORY */
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