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Code Issues Releases Wiki Activity

Ensure list_display works on outputs of unknown width

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If getcols() returns 0, we were getting stuck before in a loop of no
return. Teach getcols() to take a default value to return if the width
is unknown, and use this everywhere as appropriate.

Also make a few other cleanups while diagnosing this issue, such as
const-ifying some variables.

Noticed-by: Dave Reisner <d@falconindy.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Dan McGee 2011-06-01 13:28:00 -05:00
parent aad57cc06a
commit c1f742d775
3 changed files with 21 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/pacman/callback.c
View File

@ -351,7 +351,9 @@ void cb_trans_progress(pmtransprog_t event, const char *pkgname, int percent,
int len, wclen, wcwid, padwid;
wchar_t *wcstr;
if(config->noprogressbar) {
const int cols = getcols(0);
if(config->noprogressbar || cols == 0) {
return;
}
@ -397,7 +399,7 @@ void cb_trans_progress(pmtransprog_t event, const char *pkgname, int percent,
return;
}
infolen = getcols() * 6 / 10;
infolen = cols * 6 / 10;
if (infolen < 50) {
infolen = 50;
}
@ -454,7 +456,7 @@ void cb_trans_progress(pmtransprog_t event, const char *pkgname, int percent,
free(wcstr);
/* call refactored fill progress function */
fill_progress(percent, percent, getcols() - infolen);
fill_progress(percent, percent, cols - infolen);
if(percent == 100) {
alpm_list_t *i = NULL;
@ -497,7 +499,9 @@ void cb_dl_progress(const char *filename, off_t file_xfered, off_t file_total)
int file_percent = 0, total_percent = 0;
char rate_size = 'K', xfered_size = 'K';
if(config->noprogressbar || file_total == -1) {
const int cols = getcols(0);
if(config->noprogressbar || cols == 0 || file_total == -1) {
if(file_xfered == 0) {
printf(_("downloading %s...\n"), filename);
fflush(stdout);
@ -505,7 +509,7 @@ void cb_dl_progress(const char *filename, off_t file_xfered, off_t file_total)
return;
}
infolen = getcols() * 6 / 10;
infolen = cols * 6 / 10;
if (infolen < 50) {
infolen = 50;
}
@ -662,9 +666,9 @@ void cb_dl_progress(const char *filename, off_t file_xfered, off_t file_total)
free(wcfname);
if(totaldownload) {
fill_progress(file_percent, total_percent, getcols() - infolen);
fill_progress(file_percent, total_percent, cols - infolen);
} else {
fill_progress(file_percent, file_percent, getcols() - infolen);
fill_progress(file_percent, file_percent, cols - infolen);
}
return;
}

20
src/pacman/util.c
View File

@ -101,7 +101,7 @@ int needs_root(void)
}
/* gets the current screen column width */
int getcols(void)
int getcols(int def)
{
#ifdef TIOCGSIZE
struct ttysize win;
@ -114,7 +114,7 @@ int getcols(void)
return win.ws_col;
}
#endif
return 0;
return def;
}
/* does the same thing as 'rm -rf' */
@ -209,14 +209,13 @@ void indentprint(const char *str, int indent)
{
wchar_t *wcstr;
const wchar_t *p;
int len, cidx, cols;
int len, cidx;
const int cols = getcols(0);
if(!str) {
return;
}
cols = getcols();
/* if we're not a tty, print without indenting */
if(cols == 0) {
printf("%s", str);
@ -425,8 +424,6 @@ static int string_length(const char *s)
void string_display(const char *title, const char *string)
{
int len = 0;
if(title) {
printf("%s ", title);
}
@ -434,7 +431,7 @@ void string_display(const char *title, const char *string)
printf(_("None"));
} else {
/* compute the length of title + a space */
len = string_length(title) + 1;
int len = string_length(title) + 1;
indentprint(string, len);
}
printf("\n");
@ -443,7 +440,7 @@ void string_display(const char *title, const char *string)
void list_display(const char *title, const alpm_list_t *list)
{
const alpm_list_t *i;
int cols, len = 0;
int len = 0;
if(title) {
len = string_length(title) + 1;
@ -453,11 +450,12 @@ void list_display(const char *title, const alpm_list_t *list)
if(!list) {
printf("%s\n", _("None"));
} else {
int cols;
const int maxcols = getcols(80);
for(i = list, cols = len; i; i = alpm_list_next(i)) {
char *str = alpm_list_getdata(i);
int s = string_length(str);
int maxcols = getcols();
if(maxcols > 0 && (cols + s + 2) >= maxcols) {
if(cols + s + 2 >= maxcols) {
int j;
cols = len;
printf("\n");

2
src/pacman/util.h
View File

@ -42,7 +42,7 @@
int trans_init(pmtransflag_t flags);
int trans_release(void);
int needs_root(void);
int getcols(void);
int getcols(int def);
int rmrf(const char *path);
const char *mbasename(const char *path);
char *mdirname(const char *path);