Implement an `align` atom which will act as a modifier atom and align
any string with or without an %(atom) appearing before a %(end) atom
to the right, left or middle.
It is followed by `:<type>,<paddinglength>`, where the `<type>` is
either left, right or middle and `<paddinglength>` is the total length
of the padding to be performed. If the atom length is more than the
padding length then no padding is performed. e.g. to pad a succeeding
atom to the middle with a total padding size of 40 we can do a
--format="%(align:middle,40).."
Add documentation and tests for the same.
Mentored-by: Christian Couder <christian.cou...@gmail.com>
Mentored-by: Matthieu Moy <matthieu....@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik....@gmail.com>
---
Documentation/git-for-each-ref.txt | 8 ++++
ref-filter.c | 84 +++++++++++++++++++++++++++++++++++---
ref-filter.h | 14 +++++++
t/t6302-for-each-ref-filter.sh | 48 ++++++++++++++++++++++
4 files changed, 148 insertions(+), 6 deletions(-)
diff --git a/Documentation/git-for-each-ref.txt
b/Documentation/git-for-each-ref.txt
index e49d578..d865f98 100644
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -127,6 +127,14 @@ color::
Change output color. Followed by `:<colorname>`, where names
are described in `color.branch.*`.
+align::
+ Align any string with or without %(atom) before the %(end)
+ atom to the right, left or middle. Followed by
+ `:<type>,<paddinglength>`, where the `<type>` is either left,
+ right or middle and `<paddinglength>` is the total length of
+ the padding to be performed. If the string length is more than
+ the padding length then no padding is performed.
+
In addition to the above, for commit and tag objects, the header
field names (`tree`, `parent`, `object`, `type`, and `tag`) can
be used to specify the value in the header field.
diff --git a/ref-filter.c b/ref-filter.c
index 2c074a1..d123299 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -10,6 +10,7 @@
#include "quote.h"
#include "ref-filter.h"
#include "revision.h"
+#include "utf8.h"
typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
@@ -53,6 +54,8 @@ static struct {
{ "flag" },
{ "HEAD" },
{ "color" },
+ { "align" },
+ { "end" },
};
/*
@@ -620,7 +623,7 @@ static void populate_value(struct ref_array_item *ref)
const char *name = used_atom[i];
struct atom_value *v = &ref->value[i];
int deref = 0;
- const char *refname;
+ const char *refname = NULL;
const char *formatp;
struct branch *branch = NULL;
@@ -687,6 +690,29 @@ static void populate_value(struct ref_array_item *ref)
else
v->s = " ";
continue;
+ } else if (starts_with(name, "align:")) {
+ const char *valp = NULL;
+ struct align *align = xmalloc(sizeof(struct align));
+
+ skip_prefix(name, "align:", &valp);
+
+ if (skip_prefix(valp, "left,", &valp))
+ align->align_type = ALIGN_LEFT;
+ else if (skip_prefix(valp, "right,", &valp))
+ align->align_type = ALIGN_RIGHT;
+ else if (skip_prefix(valp, "middle,", &valp))
+ align->align_type = ALIGN_MIDDLE;
+ else
+ die(_("align: improper format"));
+ if (strtoul_ui(valp, 10, &align->align_value))
+ die(_("align: positive value expected"));
+ v->align = align;
+ v->modifier_atom = 1;
+ continue;
+ } else if (starts_with(name, "end")) {
+ v->end = 1;
+ v->modifier_atom = 1;
+ continue;
} else
continue;
@@ -1251,12 +1277,48 @@ static void emit(const char *cp, const char *ep, struct
ref_formatting_state *st
static void process_formatting_state(struct atom_value *atomv, struct
ref_formatting_state *state)
{
- /* Based on the atomv values, the formatting state is set */
+ if (atomv->align) {
+ state->align = atomv->align;
+ atomv->align = NULL;
+ }
+ if (atomv->end)
+ state->end = 1;
}
static void apply_formatting_state(struct ref_formatting_state *state, struct
strbuf *final)
{
- /* More formatting options to be evetually added */
+ if (state->align && state->end) {
+ struct strbuf *value = state->output;
+ int len = 0, buf_len = value->len;
+ struct align *align = state->align;
+
+ if (!value->buf)
+ return;
+ if (!is_utf8(value->buf)) {
+ len = value->len - utf8_strwidth(value->buf);
+ buf_len -= len;
+ }
+
+ if (align->align_value < buf_len) {
+ state->align = NULL;
+ strbuf_addbuf(final, value);
+ strbuf_release(value);
+ return;
+ }
+
+ if (align->align_type == ALIGN_LEFT)
+ strbuf_addf(final, "%-*s", len + align->align_value,
value->buf);
+ else if (align->align_type == ALIGN_MIDDLE) {
+ int right = (align->align_value - buf_len)/2;
+ strbuf_addf(final, "%*s%-*s", align->align_value -
right + len,
+ value->buf, right, "");
+ } else if (align->align_type == ALIGN_RIGHT)
+ strbuf_addf(final, "%*s", align->align_value,
value->buf);
+ strbuf_release(value);
+ state->align = NULL;
+ return;
+ } else if (state->align)
+ return;
strbuf_addbuf(final, state->output);
strbuf_release(state->output);
}
@@ -1282,10 +1344,19 @@ void show_ref_array_item(struct ref_array_item *info,
const char *format, int qu
apply_formatting_state(&state, &final_buf);
}
get_ref_atom_value(info, parse_ref_filter_atom(sp + 2, ep),
&atomv);
- process_formatting_state(atomv, &state);
- print_value(atomv, &state);
- apply_formatting_state(&state, &final_buf);
+ if (atomv->modifier_atom)
+ process_formatting_state(atomv, &state);
+ else {
+ print_value(atomv, &state);
+ apply_formatting_state(&state, &final_buf);
+ }
+ if (atomv->end) {
+ print_value(atomv, &state);
+ apply_formatting_state(&state, &final_buf);
+ }
}
+ if (state.align)
+ die(_("format: align used without an `end` atom"));
if (*cp) {
sp = cp + strlen(cp);
emit(cp, sp, &state);
@@ -1301,6 +1372,7 @@ void show_ref_array_item(struct ref_array_item *info,
const char *format, int qu
print_value(&resetv, &state);
apply_formatting_state(&state, &final_buf);
}
+
for (i = 0; i < final_buf.len; i++)
printf("%c", final_buf.buf[i]);
putchar('\n');
diff --git a/ref-filter.h b/ref-filter.h
index 9e6c2d4..81de1e2 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -16,14 +16,28 @@
#define FILTER_REFS_INCLUDE_BROKEN 0x1
#define FILTER_REFS_ALL 0x2
+#define ALIGN_LEFT 0x01
+#define ALIGN_RIGHT 0x02
+#define ALIGN_MIDDLE 0x04
+
struct ref_formatting_state {
int quote_style;
struct strbuf *output;
+ struct align *align;
+ unsigned int end : 1;
+};
+
+struct align {
+ unsigned int align_type,
+ align_value;
};
struct atom_value {
const char *s;
+ struct align *align;
unsigned long ul; /* used for sorting when not FIELD_STR */
+ unsigned int modifier_atom : 1,
+ end : 1;
};
struct ref_sorting {
diff --git a/t/t6302-for-each-ref-filter.sh b/t/t6302-for-each-ref-filter.sh
index 505a360..76041a2 100755
--- a/t/t6302-for-each-ref-filter.sh
+++ b/t/t6302-for-each-ref-filter.sh
@@ -81,4 +81,52 @@ test_expect_success 'filtering with --contains' '
test_cmp expect actual
'
+test_expect_success 'left alignment' '
+ cat >expect <<-\EOF &&
+ refname is refs/heads/master |refs/heads/master
+ refname is refs/heads/side |refs/heads/side
+ refname is refs/odd/spot |refs/odd/spot
+ refname is refs/tags/double-tag|refs/tags/double-tag
+ refname is refs/tags/four |refs/tags/four
+ refname is refs/tags/one |refs/tags/one
+ refname is refs/tags/signed-tag|refs/tags/signed-tag
+ refname is refs/tags/three |refs/tags/three
+ refname is refs/tags/two |refs/tags/two
+ EOF
+ git for-each-ref --format="%(align:left,30)refname is
%(refname)%(end)|%(refname)" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'middle alignment' '
+ cat >expect <<-\EOF &&
+ | refname is refs/heads/master |refs/heads/master
+ | refname is refs/heads/side |refs/heads/side
+ | refname is refs/odd/spot |refs/odd/spot
+ |refname is refs/tags/double-tag|refs/tags/double-tag
+ | refname is refs/tags/four |refs/tags/four
+ | refname is refs/tags/one |refs/tags/one
+ |refname is refs/tags/signed-tag|refs/tags/signed-tag
+ | refname is refs/tags/three |refs/tags/three
+ | refname is refs/tags/two |refs/tags/two
+ EOF
+ git for-each-ref --format="|%(align:middle,30)refname is
%(refname)%(end)|%(refname)" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'right alignment' '
+ cat >expect <<-\EOF &&
+ | refname is refs/heads/master|refs/heads/master
+ | refname is refs/heads/side|refs/heads/side
+ | refname is refs/odd/spot|refs/odd/spot
+ |refname is refs/tags/double-tag|refs/tags/double-tag
+ | refname is refs/tags/four|refs/tags/four
+ | refname is refs/tags/one|refs/tags/one
+ |refname is refs/tags/signed-tag|refs/tags/signed-tag
+ | refname is refs/tags/three|refs/tags/three
+ | refname is refs/tags/two|refs/tags/two
+ EOF
+ git for-each-ref --format="|%(align:right,30)refname is
%(refname)%(end)|%(refname)" >actual &&
+ test_cmp expect actual
+'
+
test_done
--
2.5.0
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