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-rw-r--r--src/pacman/util.c91
1 files changed, 48 insertions, 43 deletions
diff --git a/src/pacman/util.c b/src/pacman/util.c
index 79fb54dc..ee8fe3ff 100644
--- a/src/pacman/util.c
+++ b/src/pacman/util.c
@@ -488,34 +488,47 @@ void string_display(const char *title, const char *string)
}
static void table_print_line(const alpm_list_t *line,
- const alpm_list_t *formats)
+ size_t colcount, size_t *widths)
{
- const alpm_list_t *curformat = formats;
- const alpm_list_t *curcell = line;
-
- while(curcell && curformat) {
- printf(alpm_list_getdata(curformat), alpm_list_getdata(curcell));
- curcell = alpm_list_next(curcell);
- curformat = alpm_list_next(curformat);
+ size_t i;
+ const alpm_list_t *curcell;
+
+ for(i = 0, curcell = line; curcell && i < colcount;
+ i++, curcell = alpm_list_next(curcell)) {
+ const char *value = curcell->data;
+ size_t len = string_length(value);
+ /* silly printf requires padding size to be an int */
+ int padding = (int)widths[i] - (int)len;
+ if(padding < 0) {
+ padding = 0;
+ }
+ /* left-align all but the last column */
+ if(i + 1 < colcount) {
+ printf("%s%*s", value, padding, "");
+ } else {
+ printf("%*s%s", padding, "", value);
+ }
}
printf("\n");
}
-/* creates format strings by checking max cell lengths in cols */
-static alpm_list_t *table_create_format(const alpm_list_t *header,
- const alpm_list_t *rows)
+/* find the max string width of each column */
+static size_t table_calc_widths(const alpm_list_t *header,
+ const alpm_list_t *rows, size_t totalcols, size_t **widths)
{
- alpm_list_t *formats = NULL;
const alpm_list_t *i;
const unsigned short padding = 2;
- size_t curcol, totalcols, totalwidth = 0;
+ size_t curcol, totalwidth = 0;
size_t *colwidths;
- totalcols = alpm_list_count(header);
+ if(totalcols <= 0) {
+ return 0;
+ }
+
colwidths = malloc(totalcols * sizeof(size_t));
if(!colwidths) {
- return NULL;
+ return 0;
}
/* header determines column count and initial values of longest_strs */
for(i = header, curcol = 0; i; i = alpm_list_next(i), curcol++) {
@@ -536,30 +549,16 @@ static alpm_list_t *table_create_format(const alpm_list_t *header,
}
}
- /* now use the column width info to generate format strings */
- for(curcol = 0; curcol < totalcols; curcol++) {
- const char *display;
- char *formatstr;
- size_t colwidth = colwidths[curcol] + padding;
- totalwidth += colwidth;
-
- /* right align the last column for a cleaner table display */
- display = (curcol + 1 < totalcols) ? "%%-%ds" : "%%%ds";
- pm_asprintf(&formatstr, display, colwidth);
-
- formats = alpm_list_add(formats, formatstr);
- }
-
- free(colwidths);
-
- /* return NULL if terminal is not wide enough */
- if(totalwidth > getcols()) {
- fprintf(stderr, _("insufficient columns available for table display\n"));
- FREELIST(formats);
- return NULL;
+ for(i = header, curcol = 0; i; i = alpm_list_next(i), curcol++) {
+ /* pad everything but the last column */
+ if(curcol + 1 < totalcols) {
+ colwidths[curcol] += padding;
+ }
+ totalwidth += colwidths[curcol];
}
- return formats;
+ *widths = colwidths;
+ return totalwidth;
}
/** Displays the list in table format
@@ -576,14 +575,20 @@ int table_display(const char *title, const alpm_list_t *header,
const alpm_list_t *rows)
{
const alpm_list_t *i;
- alpm_list_t *formats;
+ size_t *widths = NULL, totalcols, totalwidth;
if(rows == NULL || header == NULL) {
return 0;
}
- formats = table_create_format(header, rows);
- if(formats == NULL) {
+ totalcols = alpm_list_count(header);
+ totalwidth = table_calc_widths(header, rows, totalcols, &widths);
+ /* return -1 if terminal is not wide enough */
+ if(totalwidth > getcols()) {
+ fprintf(stderr, _("insufficient columns available for table display\n"));
+ return -1;
+ }
+ if(!totalwidth || !widths) {
return -1;
}
@@ -591,14 +596,14 @@ int table_display(const char *title, const alpm_list_t *header,
printf("%s\n\n", title);
}
- table_print_line(header, formats);
+ table_print_line(header, totalcols, widths);
printf("\n");
for(i = rows; i; i = alpm_list_next(i)) {
- table_print_line(alpm_list_getdata(i), formats);
+ table_print_line(alpm_list_getdata(i), totalcols, widths);
}
- FREELIST(formats);
+ free(widths);
return 0;
}