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authorMark Whitley2000-06-16 00:26:51 +0000
committerMark Whitley2000-06-16 00:26:51 +0000
commitb9913954054b87f64f0a8010a2d67f0ffd7f5b86 (patch)
tree80694d2b35abd758a844fefaed681c38d9d150b5 /more.c
parent2e965239ee4f19f86e377ade94574c3c73a32425 (diff)
downloadbusybox-b9913954054b87f64f0a8010a2d67f0ffd7f5b86.zip
busybox-b9913954054b87f64f0a8010a2d67f0ffd7f5b86.tar.gz
Added some comments and changed a variable name to be more meaningful. No
fixes yet for the space bug, but should be coming soon.
Diffstat (limited to 'more.c')
-rw-r--r--more.c27
1 files changed, 22 insertions, 5 deletions
diff --git a/more.c b/more.c
index 9741491..549a417 100644
--- a/more.c
+++ b/more.c
@@ -87,7 +87,7 @@ static int terminal_height = TERMINAL_HEIGHT;
extern int more_main(int argc, char **argv)
{
int c, lines = 0, input = 0;
- int next_page = 0;
+ int please_display_more_prompt = 0;
struct stat st;
FILE *file;
@@ -140,10 +140,10 @@ extern int more_main(int argc, char **argv)
#endif
while ((c = getc(file)) != EOF) {
- if (next_page) {
+ if (please_display_more_prompt) {
int len = 0;
- next_page = 0;
+ please_display_more_prompt = 0;
lines = 0;
len = fprintf(stdout, "--More-- ");
if (file != stdin) {
@@ -162,6 +162,11 @@ extern int more_main(int argc, char **argv)
);
fflush(stdout);
+
+ /*
+ * We've just displayed the "--More--" prompt, so now we need
+ * to get input from the user.
+ */
#ifdef BB_FEATURE_USE_TERMIOS
input = getc(cin);
#else
@@ -180,6 +185,17 @@ extern int more_main(int argc, char **argv)
#endif
}
+
+ /*
+ * There are two input streams to worry about here:
+ *
+ * c : the character we are reading from the file being "mored"
+ * input : a character received from the keyboard
+ *
+ * If we hit a newline in the _file_ stream, we want to test and
+ * see if any characters have been hit in the _input_ stream. This
+ * allows the user to quit while in the middle of a file.
+ */
if (c == '\n') {
switch (input) {
case 'q':
@@ -187,12 +203,13 @@ extern int more_main(int argc, char **argv)
case '\n':
/* increment by just one line if we are at
* the end of this line*/
- next_page = 1;
+ please_display_more_prompt = 1;
break;
}
if (++lines == terminal_height)
- next_page = 1;
+ please_display_more_prompt = 1;
}
+ /* If any key other than a return is hit, scroll by one page */
putc(c, stdout);
}
fclose(file);