diff --git a/ref-filter.c b/ref-filter.c index e53c77e86b..432cea0265 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -55,6 +55,18 @@ static struct { { "color" }, }; +#define REF_FORMATTING_STATE_INIT { 0, NULL } + +struct ref_formatting_stack { + struct ref_formatting_stack *prev; + struct strbuf output; +}; + +struct ref_formatting_state { + int quote_style; + struct ref_formatting_stack *stack; +}; + struct atom_value { const char *s; unsigned long ul; /* used for sorting when not FIELD_STR */ @@ -129,6 +141,27 @@ int parse_ref_filter_atom(const char *atom, const char *ep) return at; } +static void push_stack_element(struct ref_formatting_stack **stack) +{ + struct ref_formatting_stack *s = xcalloc(1, sizeof(struct ref_formatting_stack)); + + strbuf_init(&s->output, 0); + s->prev = *stack; + *stack = s; +} + +static void pop_stack_element(struct ref_formatting_stack **stack) +{ + struct ref_formatting_stack *current = *stack; + struct ref_formatting_stack *prev = current->prev; + + if (prev) + strbuf_addbuf(&prev->output, ¤t->output); + strbuf_release(¤t->output); + free(current); + *stack = prev; +} + /* * In a format string, find the next occurrence of %(atom). */ @@ -1195,30 +1228,27 @@ void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array) qsort(array->items, array->nr, sizeof(struct ref_array_item *), compare_refs); } -static void print_value(struct atom_value *v, int quote_style) +static void append_atom(struct atom_value *v, struct ref_formatting_state *state) { - struct strbuf sb = STRBUF_INIT; - switch (quote_style) { + struct strbuf *s = &state->stack->output; + + switch (state->quote_style) { case QUOTE_NONE: - fputs(v->s, stdout); + strbuf_addstr(s, v->s); break; case QUOTE_SHELL: - sq_quote_buf(&sb, v->s); + sq_quote_buf(s, v->s); break; case QUOTE_PERL: - perl_quote_buf(&sb, v->s); + perl_quote_buf(s, v->s); break; case QUOTE_PYTHON: - python_quote_buf(&sb, v->s); + python_quote_buf(s, v->s); break; case QUOTE_TCL: - tcl_quote_buf(&sb, v->s); + tcl_quote_buf(s, v->s); break; } - if (quote_style != QUOTE_NONE) { - fputs(sb.buf, stdout); - strbuf_release(&sb); - } } static int hex1(char ch) @@ -1239,8 +1269,10 @@ static int hex2(const char *cp) return -1; } -static void emit(const char *cp, const char *ep) +static void append_literal(const char *cp, const char *ep, struct ref_formatting_state *state) { + struct strbuf *s = &state->stack->output; + while (*cp && (!ep || cp < ep)) { if (*cp == '%') { if (cp[1] == '%') @@ -1248,13 +1280,13 @@ static void emit(const char *cp, const char *ep) else { int ch = hex2(cp + 1); if (0 <= ch) { - putchar(ch); + strbuf_addch(s, ch); cp += 3; continue; } } } - putchar(*cp); + strbuf_addch(s, *cp); cp++; } } @@ -1262,19 +1294,24 @@ static void emit(const char *cp, const char *ep) void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style) { const char *cp, *sp, *ep; + struct strbuf *final_buf; + struct ref_formatting_state state = REF_FORMATTING_STATE_INIT; + + state.quote_style = quote_style; + push_stack_element(&state.stack); for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) { struct atom_value *atomv; ep = strchr(sp, ')'); if (cp < sp) - emit(cp, sp); + append_literal(cp, sp, &state); get_ref_atom_value(info, parse_ref_filter_atom(sp + 2, ep), &atomv); - print_value(atomv, quote_style); + append_atom(atomv, &state); } if (*cp) { sp = cp + strlen(cp); - emit(cp, sp); + append_literal(cp, sp, &state); } if (need_color_reset_at_eol) { struct atom_value resetv; @@ -1283,8 +1320,11 @@ void show_ref_array_item(struct ref_array_item *info, const char *format, int qu if (color_parse("reset", color) < 0) die("BUG: couldn't parse 'reset' as a color"); resetv.s = color; - print_value(&resetv, quote_style); + append_atom(&resetv, &state); } + final_buf = &state.stack->output; + fwrite(final_buf->buf, 1, final_buf->len, stdout); + pop_stack_element(&state.stack); putchar('\n'); }