diff options
Diffstat (limited to 'libps/fmt.c')
| -rw-r--r-- | libps/fmt.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/libps/fmt.c b/libps/fmt.c index d7694137..0e1e5023 100644 --- a/libps/fmt.c +++ b/libps/fmt.c @@ -36,7 +36,7 @@ field name, EINVAL is returned. Otherwise 0 is returned. See ps.h for an explanation of how FMT is derived from SRC. */ error_t -ps_fmt_create(char *src, ps_fmt_spec_t fmt_specs, ps_fmt_t *fmt) +ps_fmt_create(char *src, ps_fmt_specs_t fmt_specs, ps_fmt_t *fmt) { ps_fmt_t new_fmt; int needs = 0; @@ -144,14 +144,11 @@ ps_fmt_create(char *src, ps_fmt_spec_t fmt_specs, ps_fmt_t *fmt) name--; if (field->title) field->title--; - else - /* If there wasn't a title, give it the same one as the name. */ - field->title = name; /* Now that we've made room, do the termination of NAME. */ src[-1] = '\0'; - field->spec = find_ps_fmt_spec(name, fmt_specs); + field->spec = ps_fmt_specs_find (fmt_specs, name); if (!field->spec) /* Failed to find any named spec called NAME. */ { @@ -161,11 +158,18 @@ ps_fmt_create(char *src, ps_fmt_spec_t fmt_specs, ps_fmt_t *fmt) return EINVAL; } + if (! field->title) + /* No explicit title specified in the fmt string. */ + if (field->spec->title) + field->title = field->spec->title; /* But the spec has one. */ + else + field->title = name; /* Just use the field name. */ + /* Add FIELD's required pstat_flags to FMT's set */ needs |= ps_getter_needs(ps_fmt_spec_getter(field->spec)); if (!explicit_width) - field->width = ps_fmt_spec_default_width(field->spec); + field->width = ps_fmt_spec_width(field->spec); /* Skip optional trailing `/' after the spec name. */ if (*src == '/') @@ -191,6 +195,7 @@ ps_fmt_create(char *src, ps_fmt_spec_t fmt_specs, ps_fmt_t *fmt) new_fmt->fields = fields; new_fmt->num_fields = field - fields; new_fmt->needs = needs; + new_fmt->inval = 0; *fmt = new_fmt; @@ -280,8 +285,8 @@ ps_fmt_write_proc_stat (ps_fmt_t fmt, proc_stat_t ps, ps_stream_t stream) err = output_fn(ps, getter, width, stream); } else - /* Nope, just print spaces. */ - err = ps_stream_space (stream, ABS(width)); + /* Something to display in invalid fields. */ + err = ps_stream_write_field (stream, fmt->inval ?: "", width); } field++; @@ -390,3 +395,25 @@ ps_fmt_squash_flags(ps_fmt_t fmt, ps_flags_t flags) ps_fmt_squash (fmt, squashable_spec); } + +/* ---------------------------------------------------------------- */ + +/* Try and restrict the number of output columns in FMT to WIDTH. */ +void +ps_fmt_set_output_width (ps_fmt_t fmt, int width) +{ + struct ps_fmt_field *field = ps_fmt_fields (fmt); + int nfields = ps_fmt_num_fields (fmt); + + /* We're not very clever about this -- just add up the width of all the + fields but the last, and if the last has no existing width (as is + the case in most output formats), give it whatever is left over. */ + while (--nfields > 0) + { + int fw = field->width; + width -= field->pfx_len + (fw < 0 ? -fw : fw); + field++; + } + if (nfields == 0 && field->width == 0 && width > 0) + field->width = width - field->pfx_len - 1; /* 1 for the CR. */ +} |