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Document terminal._template_.m11_hack more and add comments.

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This commit is contained in:
Kalle Olavi Niemitalo 2007-05-20 16:10:27 +03:00 committed by Kalle Olavi Niemitalo
parent 45d1750d03
commit b904464e76
2 changed files with 39 additions and 12 deletions
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25
src/config/options.inc
View File

@ -816,6 +816,27 @@ static struct option_info config_options_info[] = {
"_template_", 0,
N_("Options specific to this terminal type (according to $TERM value).")),
/* TODO: Incorporate some of the following to the option text.
*
* When UTF-8 I/O is disabled:
* 0 (TERM_DUMB) outputs ASCII -+| characters.
* 1 (TERM_VT100) switches charsets with ^N and ^O.
* 2 (TERM_LINUX) outputs CP437 characters without switching
* charsets, so it works correctly only if the terminal uses
* CP437. Can also be made CP850 and CP852 compatible with
* the restrict_852 option.
* 3 (TERM_KOI8) outputs KOI8-R characters without switching
* charsets, so it works correctly only if the terminal uses
* KOI8-R and the user has selected either KOI8-R or ASCII
* in ELinks. It is also mostly compatible with KOI8-U.
* 4 (TERM_FREEBSD) outputs characters in the 0x80...0x9F
* range, which FreeBSD 4.0 (but not 5.0) treated as
* graphical.
*
* When UTF-8 I/O is enabled, ELinks outputs (almost) the same
* characters as above but encodes them in UTF-8 and does not
* switch charsets. So, it will work in any terminal that
* understands UTF-8 and has the characters in its font. */
INIT_OPT_INT("terminal._template_", N_("Type"),
"type", 0, 0, 4, 0,
N_("Terminal type; matters mostly only when drawing frames and\n"
@ -829,8 +850,8 @@ static struct option_info config_options_info[] = {
INIT_OPT_BOOL("terminal._template_", N_("Switch fonts for line drawing"),
"m11_hack", 0, 0,
N_("Switch fonts when drawing lines, enabling both local characters\n"
"and lines working at the same time. Makes sense only with linux\n"
"terminal.")),
"and lines working at the same time. ELinks uses this option only if\n"
"UTF-8 I/O is disabled and the terminal type is Linux or FreeBSD.")),
/* When CONFIG_UTF8 is defined, any code that reads the "utf_8_io"
* option should also check whether the "codepage" option is UTF-8,

26
src/terminal/screen.c
View File

@ -31,7 +31,7 @@
const unsigned char frame_dumb[48] = " ||||++||++++++--|-+||++--|-+----++++++++ ";
static const unsigned char frame_vt100[48] = "aaaxuuukkuxkjjjkmvwtqnttmlvwtqnvvwwmmllnnjla ";
/* For UTF8 I/O */
/* For UTF-8 I/O */
static const unsigned char frame_vt100_u[48] = {
177, 177, 177, 179, 180, 180, 180, 191,
191, 180, 179, 191, 217, 217, 217, 191,
@ -136,6 +136,9 @@ static const unsigned char frame_restrict[48] = {
#define add_term_string(str, tstr) \
add_bytes_to_string(str, (tstr).source, (tstr).length)
/* ECMA-48: CSI Ps... 06/13 = SGR - SELECT GRAPHIC RENDITION
* Ps = 10 = primary (default) font
* Ps = 11 = first alternative font */
static const struct string m11_hack_frame_seqs[] = {
/* end border: */ TERM_STRING("\033[10m"),
/* begin border: */ TERM_STRING("\033[11m"),
@ -165,7 +168,7 @@ struct screen_driver {
struct screen_driver_opt {
/* Charsets when doing UTF8 I/O. */
/* [0] is the common charset and [1] is the frame charset.
* Test whether to use UTF8 I/O using the use_utf8_io() macro. */
* Test whether to use UTF8 I/O using the use_utf8_io() macro. */
int charsets[2];
/* The frame translation table. May be NULL. */
@ -203,7 +206,7 @@ static const struct screen_driver_opt dumb_screen_driver_opt = {
/* color_mode: */ COLOR_MODE_16,
/* transparent: */ 1,
#ifdef CONFIG_UTF8
/* utf8: */ 0,
/* utf8_cp: */ 0,
#endif /* CONFIG_UTF8 */
};
@ -215,7 +218,7 @@ static const struct screen_driver_opt vt100_screen_driver_opt = {
/* color_mode: */ COLOR_MODE_16,
/* transparent: */ 1,
#ifdef CONFIG_UTF8
/* utf8: */ 0,
/* utf8_cp: */ 0,
#endif /* CONFIG_UTF8 */
};
@ -227,7 +230,7 @@ static const struct screen_driver_opt linux_screen_driver_opt = {
/* color_mode: */ COLOR_MODE_16,
/* transparent: */ 1,
#ifdef CONFIG_UTF8
/* utf8: */ 0,
/* utf8_cp: */ 0,
#endif /* CONFIG_UTF8 */
};
@ -239,7 +242,7 @@ static const struct screen_driver_opt koi8_screen_driver_opt = {
/* color_mode: */ COLOR_MODE_16,
/* transparent: */ 1,
#ifdef CONFIG_UTF8
/* utf8: */ 0,
/* utf8_cp: */ 0,
#endif /* CONFIG_UTF8 */
};
@ -251,7 +254,7 @@ static const struct screen_driver_opt freebsd_screen_driver_opt = {
/* color_mode: */ COLOR_MODE_16,
/* transparent: */ 1,
#ifdef CONFIG_UTF8
/* utf8: */ 0,
/* utf8_cp: */ 0,
#endif /* CONFIG_UTF8 */
};
@ -269,7 +272,10 @@ static const struct screen_driver_opt *const screen_driver_opts[] = {
static INIT_LIST_HEAD(active_screen_drivers);
/* Set driver->opt according to driver->type and term_spec.
* Other members of *driver need not have been initialized. */
* Other members of *driver need not have been initialized.
*
* If you modify anything here, check whether option descriptions
* should be updated. */
static void
set_screen_driver_opt(struct screen_driver *driver, struct option *term_spec)
{
@ -393,8 +399,8 @@ add_screen_driver(enum term_mode_type type, struct terminal *term, int env_len)
term->spec->change_hook = screen_driver_change_hook;
#ifdef CONFIG_UTF8
term->utf8_io = use_utf8_io(driver);
term->utf8_cp = driver->opt.utf8_cp;
term->utf8_io = use_utf8_io(driver);
#endif /* CONFIG_UTF8 */
return driver;
@ -416,8 +422,8 @@ get_screen_driver(struct terminal *term)
move_to_top_of_list(active_screen_drivers, driver);
#ifdef CONFIG_UTF8
term->utf8_io = use_utf8_io(driver);
term->utf8_cp = driver->opt.utf8_cp;
term->utf8_io = use_utf8_io(driver);
#endif /* CONFIG_UTF8 */
return driver;
}