diff options
Diffstat (limited to 'column.c')
| -rw-r--r-- | column.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/column.c b/column.c new file mode 100644 index 0000000..3349f58 --- /dev/null +++ b/column.c @@ -0,0 +1,169 @@ +#include "cache.h" +#include "column.h" +#include "string-list.h" +#include "parse-options.h" + +/* Display without layout when not enabled */ +static void display_plain(const struct string_list *list, + const char *indent, const char *nl) +{ + int i; + + for (i = 0; i < list->nr; i++) + printf("%s%s%s", indent, list->items[i].string, nl); +} + +void print_columns(const struct string_list *list, unsigned int colopts, + const struct column_options *opts) +{ + struct column_options nopts; + + if (!list->nr) + return; + assert((colopts & COL_ENABLE_MASK) != COL_AUTO); + + memset(&nopts, 0, sizeof(nopts)); + nopts.indent = opts && opts->indent ? opts->indent : ""; + nopts.nl = opts && opts->nl ? opts->nl : "\n"; + nopts.padding = opts ? opts->padding : 1; + nopts.width = opts && opts->width ? opts->width : term_columns() - 1; + if (!column_active(colopts)) { + display_plain(list, "", "\n"); + return; + } + switch (COL_LAYOUT(colopts)) { + case COL_PLAIN: + display_plain(list, nopts.indent, nopts.nl); + break; + default: + die("BUG: invalid layout mode %d", COL_LAYOUT(colopts)); + } +} + +int finalize_colopts(unsigned int *colopts, int stdout_is_tty) +{ + if ((*colopts & COL_ENABLE_MASK) == COL_AUTO) { + if (stdout_is_tty < 0) + stdout_is_tty = isatty(1); + *colopts &= ~COL_ENABLE_MASK; + if (stdout_is_tty) + *colopts |= COL_ENABLED; + } + return 0; +} + +struct colopt { + const char *name; + unsigned int value; + unsigned int mask; +}; + +#define LAYOUT_SET 1 +#define ENABLE_SET 2 + +static int parse_option(const char *arg, int len, unsigned int *colopts, + int *group_set) +{ + struct colopt opts[] = { + { "always", COL_ENABLED, COL_ENABLE_MASK }, + { "never", COL_DISABLED, COL_ENABLE_MASK }, + { "auto", COL_AUTO, COL_ENABLE_MASK }, + { "plain", COL_PLAIN, COL_LAYOUT_MASK }, + }; + int i; + + for (i = 0; i < ARRAY_SIZE(opts); i++) { + int arg_len = len, name_len; + const char *arg_str = arg; + + name_len = strlen(opts[i].name); + if (arg_len != name_len || + strncmp(arg_str, opts[i].name, name_len)) + continue; + + switch (opts[i].mask) { + case COL_ENABLE_MASK: + *group_set |= ENABLE_SET; + break; + case COL_LAYOUT_MASK: + *group_set |= LAYOUT_SET; + break; + } + + if (opts[i].mask) + *colopts = (*colopts & ~opts[i].mask) | opts[i].value; + return 0; + } + + return error("unsupported option '%s'", arg); +} + +static int parse_config(unsigned int *colopts, const char *value) +{ + const char *sep = " ,"; + int group_set = 0; + + while (*value) { + int len = strcspn(value, sep); + if (len) { + if (parse_option(value, len, colopts, &group_set)) + return -1; + + value += len; + } + value += strspn(value, sep); + } + /* + * Setting layout implies "always" if neither always, never + * nor auto is specified. + * + * Current value in COL_ENABLE_MASK is disregarded. This means if + * you set column.ui = auto and pass --column=row, then "auto" + * will become "always". + */ + if ((group_set & LAYOUT_SET) && !(group_set & ENABLE_SET)) + *colopts = (*colopts & ~COL_ENABLE_MASK) | COL_ENABLED; + return 0; +} + +static int column_config(const char *var, const char *value, + const char *key, unsigned int *colopts) +{ + if (!value) + return config_error_nonbool(var); + if (parse_config(colopts, value)) + return error("invalid column.%s mode %s", key, value); + return 0; +} + +int git_column_config(const char *var, const char *value, + const char *command, unsigned int *colopts) +{ + const char *it = skip_prefix(var, "column."); + if (!it) + return 0; + + if (!strcmp(it, "ui")) + return column_config(var, value, "ui", colopts); + + if (command && !strcmp(it, command)) + return column_config(var, value, it, colopts); + + return 0; +} + +int parseopt_column_callback(const struct option *opt, + const char *arg, int unset) +{ + unsigned int *colopts = opt->value; + *colopts |= COL_PARSEOPT; + *colopts &= ~COL_ENABLE_MASK; + if (unset) /* --no-column == never */ + return 0; + /* --column == always unless "arg" states otherwise */ + *colopts |= COL_ENABLED; + if (arg) + return parse_config(colopts, arg); + + return 0; +} |