diff options
Diffstat (limited to 'third_party/git/json-writer.c')
| -rw-r--r-- | third_party/git/json-writer.c | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/third_party/git/json-writer.c b/third_party/git/json-writer.c deleted file mode 100644 index aadb9dbddc..0000000000 --- a/third_party/git/json-writer.c +++ /dev/null @@ -1,414 +0,0 @@ -#include "cache.h" -#include "json-writer.h" - -void jw_init(struct json_writer *jw) -{ - strbuf_init(&jw->json, 0); - strbuf_init(&jw->open_stack, 0); - jw->need_comma = 0; - jw->pretty = 0; -} - -void jw_release(struct json_writer *jw) -{ - strbuf_release(&jw->json); - strbuf_release(&jw->open_stack); -} - -/* - * Append JSON-quoted version of the given string to 'out'. - */ -static void append_quoted_string(struct strbuf *out, const char *in) -{ - unsigned char c; - - strbuf_addch(out, '"'); - while ((c = *in++) != '\0') { - if (c == '"') - strbuf_addstr(out, "\\\""); - else if (c == '\\') - strbuf_addstr(out, "\\\\"); - else if (c == '\n') - strbuf_addstr(out, "\\n"); - else if (c == '\r') - strbuf_addstr(out, "\\r"); - else if (c == '\t') - strbuf_addstr(out, "\\t"); - else if (c == '\f') - strbuf_addstr(out, "\\f"); - else if (c == '\b') - strbuf_addstr(out, "\\b"); - else if (c < 0x20) - strbuf_addf(out, "\\u%04x", c); - else - strbuf_addch(out, c); - } - strbuf_addch(out, '"'); -} - -static void indent_pretty(struct json_writer *jw) -{ - int k; - - for (k = 0; k < jw->open_stack.len; k++) - strbuf_addstr(&jw->json, " "); -} - -/* - * Begin an object or array (either top-level or nested within the currently - * open object or array). - */ -static void begin(struct json_writer *jw, char ch_open, int pretty) -{ - jw->pretty = pretty; - - strbuf_addch(&jw->json, ch_open); - - strbuf_addch(&jw->open_stack, ch_open); - jw->need_comma = 0; -} - -/* - * Assert that the top of the open-stack is an object. - */ -static void assert_in_object(const struct json_writer *jw, const char *key) -{ - if (!jw->open_stack.len) - BUG("json-writer: object: missing jw_object_begin(): '%s'", key); - if (jw->open_stack.buf[jw->open_stack.len - 1] != '{') - BUG("json-writer: object: not in object: '%s'", key); -} - -/* - * Assert that the top of the open-stack is an array. - */ -static void assert_in_array(const struct json_writer *jw) -{ - if (!jw->open_stack.len) - BUG("json-writer: array: missing jw_array_begin()"); - if (jw->open_stack.buf[jw->open_stack.len - 1] != '[') - BUG("json-writer: array: not in array"); -} - -/* - * Add comma if we have already seen a member at this level. - */ -static void maybe_add_comma(struct json_writer *jw) -{ - if (jw->need_comma) - strbuf_addch(&jw->json, ','); - else - jw->need_comma = 1; -} - -static void fmt_double(struct json_writer *jw, int precision, - double value) -{ - if (precision < 0) { - strbuf_addf(&jw->json, "%f", value); - } else { - struct strbuf fmt = STRBUF_INIT; - strbuf_addf(&fmt, "%%.%df", precision); - strbuf_addf(&jw->json, fmt.buf, value); - strbuf_release(&fmt); - } -} - -static void object_common(struct json_writer *jw, const char *key) -{ - assert_in_object(jw, key); - maybe_add_comma(jw); - - if (jw->pretty) { - strbuf_addch(&jw->json, '\n'); - indent_pretty(jw); - } - - append_quoted_string(&jw->json, key); - strbuf_addch(&jw->json, ':'); - if (jw->pretty) - strbuf_addch(&jw->json, ' '); -} - -static void array_common(struct json_writer *jw) -{ - assert_in_array(jw); - maybe_add_comma(jw); - - if (jw->pretty) { - strbuf_addch(&jw->json, '\n'); - indent_pretty(jw); - } -} - -/* - * Assert that the given JSON object or JSON array has been properly - * terminated. (Has closing bracket.) - */ -static void assert_is_terminated(const struct json_writer *jw) -{ - if (jw->open_stack.len) - BUG("json-writer: object: missing jw_end(): '%s'", - jw->json.buf); -} - -void jw_object_begin(struct json_writer *jw, int pretty) -{ - begin(jw, '{', pretty); -} - -void jw_object_string(struct json_writer *jw, const char *key, const char *value) -{ - object_common(jw, key); - append_quoted_string(&jw->json, value); -} - -void jw_object_intmax(struct json_writer *jw, const char *key, intmax_t value) -{ - object_common(jw, key); - strbuf_addf(&jw->json, "%"PRIdMAX, value); -} - -void jw_object_double(struct json_writer *jw, const char *key, int precision, - double value) -{ - object_common(jw, key); - fmt_double(jw, precision, value); -} - -void jw_object_true(struct json_writer *jw, const char *key) -{ - object_common(jw, key); - strbuf_addstr(&jw->json, "true"); -} - -void jw_object_false(struct json_writer *jw, const char *key) -{ - object_common(jw, key); - strbuf_addstr(&jw->json, "false"); -} - -void jw_object_bool(struct json_writer *jw, const char *key, int value) -{ - if (value) - jw_object_true(jw, key); - else - jw_object_false(jw, key); -} - -void jw_object_null(struct json_writer *jw, const char *key) -{ - object_common(jw, key); - strbuf_addstr(&jw->json, "null"); -} - -static void increase_indent(struct strbuf *sb, - const struct json_writer *jw, - int indent) -{ - int k; - - strbuf_reset(sb); - for (k = 0; k < jw->json.len; k++) { - char ch = jw->json.buf[k]; - strbuf_addch(sb, ch); - if (ch == '\n') - strbuf_addchars(sb, ' ', indent); - } -} - -static void kill_indent(struct strbuf *sb, - const struct json_writer *jw) -{ - int k; - int eat_it = 0; - - strbuf_reset(sb); - for (k = 0; k < jw->json.len; k++) { - char ch = jw->json.buf[k]; - if (eat_it && ch == ' ') - continue; - if (ch == '\n') { - eat_it = 1; - continue; - } - eat_it = 0; - strbuf_addch(sb, ch); - } -} - -static void append_sub_jw(struct json_writer *jw, - const struct json_writer *value) -{ - /* - * If both are pretty, increase the indentation of the sub_jw - * to better fit under the super. - * - * If the super is pretty, but the sub_jw is compact, leave the - * sub_jw compact. (We don't want to parse and rebuild the sub_jw - * for this debug-ish feature.) - * - * If the super is compact, and the sub_jw is pretty, convert - * the sub_jw to compact. - * - * If both are compact, keep the sub_jw compact. - */ - if (jw->pretty && jw->open_stack.len && value->pretty) { - struct strbuf sb = STRBUF_INIT; - increase_indent(&sb, value, jw->open_stack.len * 2); - strbuf_addbuf(&jw->json, &sb); - strbuf_release(&sb); - return; - } - if (!jw->pretty && value->pretty) { - struct strbuf sb = STRBUF_INIT; - kill_indent(&sb, value); - strbuf_addbuf(&jw->json, &sb); - strbuf_release(&sb); - return; - } - - strbuf_addbuf(&jw->json, &value->json); -} - -/* - * Append existing (properly terminated) JSON sub-data (object or array) - * as-is onto the given JSON data. - */ -void jw_object_sub_jw(struct json_writer *jw, const char *key, - const struct json_writer *value) -{ - assert_is_terminated(value); - - object_common(jw, key); - append_sub_jw(jw, value); -} - -void jw_object_inline_begin_object(struct json_writer *jw, const char *key) -{ - object_common(jw, key); - - jw_object_begin(jw, jw->pretty); -} - -void jw_object_inline_begin_array(struct json_writer *jw, const char *key) -{ - object_common(jw, key); - - jw_array_begin(jw, jw->pretty); -} - -void jw_array_begin(struct json_writer *jw, int pretty) -{ - begin(jw, '[', pretty); -} - -void jw_array_string(struct json_writer *jw, const char *value) -{ - array_common(jw); - append_quoted_string(&jw->json, value); -} - -void jw_array_intmax(struct json_writer *jw, intmax_t value) -{ - array_common(jw); - strbuf_addf(&jw->json, "%"PRIdMAX, value); -} - -void jw_array_double(struct json_writer *jw, int precision, double value) -{ - array_common(jw); - fmt_double(jw, precision, value); -} - -void jw_array_true(struct json_writer *jw) -{ - array_common(jw); - strbuf_addstr(&jw->json, "true"); -} - -void jw_array_false(struct json_writer *jw) -{ - array_common(jw); - strbuf_addstr(&jw->json, "false"); -} - -void jw_array_bool(struct json_writer *jw, int value) -{ - if (value) - jw_array_true(jw); - else - jw_array_false(jw); -} - -void jw_array_null(struct json_writer *jw) -{ - array_common(jw); - strbuf_addstr(&jw->json, "null"); -} - -void jw_array_sub_jw(struct json_writer *jw, const struct json_writer *value) -{ - assert_is_terminated(value); - - array_common(jw); - append_sub_jw(jw, value); -} - -void jw_array_argc_argv(struct json_writer *jw, int argc, const char **argv) -{ - int k; - - for (k = 0; k < argc; k++) - jw_array_string(jw, argv[k]); -} - -void jw_array_argv(struct json_writer *jw, const char **argv) -{ - while (*argv) - jw_array_string(jw, *argv++); -} - -void jw_array_inline_begin_object(struct json_writer *jw) -{ - array_common(jw); - - jw_object_begin(jw, jw->pretty); -} - -void jw_array_inline_begin_array(struct json_writer *jw) -{ - array_common(jw); - - jw_array_begin(jw, jw->pretty); -} - -int jw_is_terminated(const struct json_writer *jw) -{ - return !jw->open_stack.len; -} - -void jw_end(struct json_writer *jw) -{ - char ch_open; - int len; - - if (!jw->open_stack.len) - BUG("json-writer: too many jw_end(): '%s'", jw->json.buf); - - len = jw->open_stack.len - 1; - ch_open = jw->open_stack.buf[len]; - - strbuf_setlen(&jw->open_stack, len); - jw->need_comma = 1; - - if (jw->pretty) { - strbuf_addch(&jw->json, '\n'); - indent_pretty(jw); - } - - if (ch_open == '{') - strbuf_addch(&jw->json, '}'); - else - strbuf_addch(&jw->json, ']'); -} |