Continue removing die() calls from ref-filter formatting logic,
so that it could be used by other commands.
Change the signature of handlers by adding return value
and strbuf parameter for errors.
Return value equals 0 upon success and -1 upon failure.
Upon failure, error message is appended to the strbuf.
Signed-off-by: Olga Telezhnaia <olyatelezhn...@gmail.com>
---
ref-filter.c | 47 +++++++++++++++++++++++++++++++----------------
1 file changed, 31 insertions(+), 16 deletions(-)
diff --git a/ref-filter.c b/ref-filter.c
index 2c3fb2f003708..f79c8c477f1dc 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -387,7 +387,8 @@ struct ref_formatting_state {
struct atom_value {
const char *s;
- void (*handler)(struct atom_value *atomv, struct ref_formatting_state
*state);
+ int (*handler)(struct atom_value *atomv, struct ref_formatting_state
*state,
+ struct strbuf *err);
uintmax_t value; /* used for sorting when not FIELD_STR */
struct used_atom *atom;
};
@@ -481,7 +482,8 @@ static void quote_formatting(struct strbuf *s, const char
*str, int quote_style)
}
}
-static void append_atom(struct atom_value *v, struct ref_formatting_state
*state)
+static int append_atom(struct atom_value *v, struct ref_formatting_state
*state,
+ struct strbuf *unused_err)
{
/*
* Quote formatting is only done when the stack has a single
@@ -493,6 +495,7 @@ static void append_atom(struct atom_value *v, struct
ref_formatting_state *state
quote_formatting(&state->stack->output, v->s,
state->quote_style);
else
strbuf_addstr(&state->stack->output, v->s);
+ return 0;
}
static void push_stack_element(struct ref_formatting_stack **stack)
@@ -527,7 +530,8 @@ static void end_align_handler(struct ref_formatting_stack
**stack)
strbuf_release(&s);
}
-static void align_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state)
+static int align_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state,
+ struct strbuf *unused_err)
{
struct ref_formatting_stack *new_stack;
@@ -535,6 +539,7 @@ static void align_atom_handler(struct atom_value *atomv,
struct ref_formatting_s
new_stack = state->stack;
new_stack->at_end = end_align_handler;
new_stack->at_end_data = &atomv->atom->u.align;
+ return 0;
}
static void if_then_else_handler(struct ref_formatting_stack **stack)
@@ -572,7 +577,8 @@ static void if_then_else_handler(struct
ref_formatting_stack **stack)
free(if_then_else);
}
-static void if_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state)
+static int if_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state,
+ struct strbuf *unused_err)
{
struct ref_formatting_stack *new_stack;
struct if_then_else *if_then_else = xcalloc(sizeof(struct
if_then_else), 1);
@@ -584,6 +590,7 @@ static void if_atom_handler(struct atom_value *atomv,
struct ref_formatting_stat
new_stack = state->stack;
new_stack->at_end = if_then_else_handler;
new_stack->at_end_data = if_then_else;
+ return 0;
}
static int is_empty(const char *s)
@@ -596,7 +603,8 @@ static int is_empty(const char *s)
return 1;
}
-static void then_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state)
+static int then_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state,
+ struct strbuf *err)
{
struct ref_formatting_stack *cur = state->stack;
struct if_then_else *if_then_else = NULL;
@@ -604,11 +612,11 @@ static void then_atom_handler(struct atom_value *atomv,
struct ref_formatting_st
if (cur->at_end == if_then_else_handler)
if_then_else = (struct if_then_else *)cur->at_end_data;
if (!if_then_else)
- die(_("format: %%(then) atom used without an %%(if) atom"));
+ return strbuf_error(err, -1, _("format: %%(then) atom used
without an %%(if) atom"));
if (if_then_else->then_atom_seen)
- die(_("format: %%(then) atom used more than once"));
+ return strbuf_error(err, -1, _("format: %%(then) atom used more
than once"));
if (if_then_else->else_atom_seen)
- die(_("format: %%(then) atom used after %%(else)"));
+ return strbuf_error(err, -1, _("format: %%(then) atom used
after %%(else)"));
if_then_else->then_atom_seen = 1;
/*
* If the 'equals' or 'notequals' attribute is used then
@@ -624,9 +632,11 @@ static void then_atom_handler(struct atom_value *atomv,
struct ref_formatting_st
} else if (cur->output.len && !is_empty(cur->output.buf))
if_then_else->condition_satisfied = 1;
strbuf_reset(&cur->output);
+ return 0;
}
-static void else_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state)
+static int else_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state,
+ struct strbuf *err)
{
struct ref_formatting_stack *prev = state->stack;
struct if_then_else *if_then_else = NULL;
@@ -634,24 +644,26 @@ static void else_atom_handler(struct atom_value *atomv,
struct ref_formatting_st
if (prev->at_end == if_then_else_handler)
if_then_else = (struct if_then_else *)prev->at_end_data;
if (!if_then_else)
- die(_("format: %%(else) atom used without an %%(if) atom"));
+ return strbuf_error(err, -1, _("format: %%(else) atom used
without an %%(if) atom"));
if (!if_then_else->then_atom_seen)
- die(_("format: %%(else) atom used without a %%(then) atom"));
+ return strbuf_error(err, -1, _("format: %%(else) atom used
without a %%(then) atom"));
if (if_then_else->else_atom_seen)
- die(_("format: %%(else) atom used more than once"));
+ return strbuf_error(err, -1, _("format: %%(else) atom used more
than once"));
if_then_else->else_atom_seen = 1;
push_stack_element(&state->stack);
state->stack->at_end_data = prev->at_end_data;
state->stack->at_end = prev->at_end;
+ return 0;
}
-static void end_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state)
+static int end_atom_handler(struct atom_value *atomv, struct
ref_formatting_state *state,
+ struct strbuf *err)
{
struct ref_formatting_stack *current = state->stack;
struct strbuf s = STRBUF_INIT;
if (!current->at_end)
- die(_("format: %%(end) atom used without corresponding atom"));
+ return strbuf_error(err, -1, _("format: %%(end) atom used
without corresponding atom"));
current->at_end(&state->stack);
/* Stack may have been popped within at_end(), hence reset the current
pointer */
@@ -668,6 +680,7 @@ static void end_atom_handler(struct atom_value *atomv,
struct ref_formatting_sta
}
strbuf_release(&s);
pop_stack_element(&state->stack);
+ return 0;
}
/*
@@ -2138,7 +2151,8 @@ int format_ref_array_item(struct ref_array_item *info,
get_ref_atom_value(info,
parse_ref_filter_atom(format, sp + 2, ep),
&atomv);
- atomv->handler(atomv, &state);
+ if (atomv->handler(atomv, &state, error_buf))
+ return -1;
}
if (*cp) {
sp = cp + strlen(cp);
@@ -2147,7 +2161,8 @@ int format_ref_array_item(struct ref_array_item *info,
if (format->need_color_reset_at_eol) {
struct atom_value resetv;
resetv.s = GIT_COLOR_RESET;
- append_atom(&resetv, &state);
+ if (append_atom(&resetv, &state, error_buf))
+ return -1;
}
if (state.stack->prev)
return strbuf_error(error_buf, -1, _("format: %%(end) atom
missing"));
--
https://github.com/git/git/pull/466
