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Normally all cells (and in turn columns) share the same width. This layout mode can waste space because one long item can stretch our all columns. With COL_DENSE enabled, column width is calculated indepdendently. All columns are shrunk to minimum, then it attempts to push cells of the last row over to the next column with hope that everything still fits even there's one row less. The process is repeated until the new layout cannot fit in given width any more, or there's only one row left (perfect!). Apparently, this mode consumes more cpu than the old one, but it makes better use of terminal space. For layouting one or two screens, cpu usage should not be detectable. This patch introduces option handling code besides layout modes and enable/disable to expose this feature as "dense". The feature can be turned off by specifying "nodense". Thanks-to: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#ifndef COLUMN_H
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#define COLUMN_H
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#define COL_LAYOUT_MASK 0x000F
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#define COL_ENABLE_MASK 0x0030 /* always, never or auto */
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#define COL_PARSEOPT 0x0040 /* --column is given from cmdline */
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#define COL_DENSE 0x0080 /* Shrink columns when possible,
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making space for more columns */
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#define COL_DISABLED 0x0000 /* must be zero */
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#define COL_ENABLED 0x0010
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#define COL_AUTO 0x0020
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#define COL_LAYOUT(c) ((c) & COL_LAYOUT_MASK)
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#define COL_COLUMN 0 /* Fill columns before rows */
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#define COL_ROW 1 /* Fill rows before columns */
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#define COL_PLAIN 15 /* one column */
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#define explicitly_enable_column(c) \
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(((c) & COL_PARSEOPT) && column_active(c))
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struct column_options {
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int width;
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int padding;
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const char *indent;
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const char *nl;
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};
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struct option;
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extern int parseopt_column_callback(const struct option *, const char *, int);
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extern int git_column_config(const char *var, const char *value,
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const char *command, unsigned int *colopts);
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extern int finalize_colopts(unsigned int *colopts, int stdout_is_tty);
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static inline int column_active(unsigned int colopts)
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{
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return (colopts & COL_ENABLE_MASK) == COL_ENABLED;
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}
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extern void print_columns(const struct string_list *list, unsigned int colopts,
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const struct column_options *opts);
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#endif
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