From 0e9d3c6c28c73bc489eff55e81e36423f0d56e18 Mon Sep 17 00:00:00 2001
From: Chris Allegretta <chrisa@asty.org>
Date: Thu, 4 Jan 2001 04:59:17 +0000
Subject: [PATCH] Commented file browser code
git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@440 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
---
files.c | 35 +++++++++++++++++++++++++++--------
1 file changed, 27 insertions(+), 8 deletions(-)
diff --git a/files.c b/files.c
index 060a5db7..372adde0 100644
--- a/files.c
+++ b/files.c
@@ -1086,6 +1086,8 @@ int diralphasort(const void *va, const void *vb) {
return(answer);
}
+
+/* Initialize the browser code, including the list of files in *path */
char **browser_init(char *path, int *longest, int *numents)
{
DIR *dir;
@@ -1121,10 +1123,6 @@ char **browser_init(char *path, int *longest, int *numents)
else
snprintf(filelist[i], strlen(next->d_name) + strlen(path) + 2,
"%s/%s", path, next->d_name);
-
-/*
- filelist[i] = mallocstrcpy(filelist[i], next->d_name);
-*/
i++;
}
@@ -1146,6 +1144,8 @@ void free_charptrarray(char **array, int len)
free(array);
}
+/* only print the last part of a path, isn't there a shell
+ command for this? */
char *tail(char *foo)
{
char *tmp = NULL;
@@ -1159,6 +1159,7 @@ char *tail(char *foo)
return tmp;
}
+/* Strip one dir from the end of a string */
void striponedir(char *foo)
{
char *tmp = NULL;
@@ -1182,6 +1183,7 @@ void striponedir(char *foo)
return;
}
+/* Our browser function. inpath is the path to start browsing from */
char *do_browser(char *inpath)
{
struct stat st;
@@ -1191,16 +1193,22 @@ char *do_browser(char *inpath)
int col = 0, selected = 0, editline = 0, width = 0, filecols = 0;
char **filelist = (char **) NULL;
+ /* If path isn't the same as inpath, we are being passed a new
+ dir as an arg. We free it here so it will be copied from
+ inpath below */
if (path != NULL && strcmp(path, inpath)) {
free(path);
path = NULL;
}
+ /* if path doesn't exist, make it so */
if (path == NULL)
path = mallocstrcpy(path, inpath);
filelist = browser_init(path, &longest, &numents);
foo = nmalloc(longest + 8);
+
+ /* Sort the list by directory first then alphabetically */
qsort(filelist, numents, sizeof(char *), diralphasort);
titlebar(path);
@@ -1210,6 +1218,8 @@ char *do_browser(char *inpath)
i = 0;
width = 0;
filecols = 0;
+
+ /* Loop invariant: Microsoft sucks. */
do {
blank_edit();
blank_statusbar();
@@ -1270,6 +1280,8 @@ char *do_browser(char *inpath)
break;
case KEY_ENTER:
case NANO_CONTROL_M:
+
+ /* You can't cd up from / */
if (!strcmp(filelist[selected], "/..") && !strcmp(path, "/"))
statusbar(_("Can't move up a directory"));
else
@@ -1278,22 +1290,26 @@ char *do_browser(char *inpath)
st = filestat(path);
if (S_ISDIR(st.st_mode)) {
if (opendir(path) == NULL) {
+ /* We can't open this dir for some reason. Complain */
statusbar(_("Can't open \"%s\": %s"), path, strerror(errno));
striponedir(path);
align(&path);
break;
- }
- }
+ }
- st = filestat(path);
- if (S_ISDIR(st.st_mode)) {
if (!strcmp("..", tail(path))) {
+ /* They want to go up a level, so strip off .. and the
+ current dir */
striponedir(path);
striponedir(path);
align(&path);
}
+
+ /* Start over again with the new path value */
return do_browser(path);
} else {
+
+ /* Work around for duplicating code */
ungetch(NANO_EXIT_KEY);
retval = path;
abort = 1;
@@ -1342,12 +1358,14 @@ char *do_browser(char *inpath)
sprintf(foo + longest - 7, "%4d KB", (int) st.st_size / 1024);
}
+ /* Hilight the currently selected file/dir */
if (j == selected)
wattron(edit, A_REVERSE);
waddnstr(edit, foo, strlen(foo));
if (j == selected)
wattroff(edit, A_REVERSE);
+ /* And add some space between the cols */
waddstr(edit, " ");
col += 2;
@@ -1368,6 +1386,7 @@ char *do_browser(char *inpath)
titlebar(NULL);
edit_refresh();
+ /* cleanup */
free_charptrarray(filelist, numents);
free(foo);
return retval;
--
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