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Commit 12e3708e authored by David Lawrence Ramsey's avatar David Lawrence Ramsey
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per Benno Schulenberg's patch with a few tweaks by me, if we're using 

verbatim input to enter a Unicode sequence, indicate it on the
statusbar; also, refactor the Unicode sequence handler function to
remove redundant code


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3581 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
parent 9a5139e9
master feature/match-parens refactor/readbility
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ChangeLog
View file @ 12e3708e
......@@ -109,6 +109,12 @@ CVS code -
its description across all documentation. Changes to nano.1,
nanorc.5, nanorc.sample, and nano.texi. (Benno Schulenberg and
DLR)
- If we're using verbatim input to enter a Unicode sequence,
indicate it on the statusbar. Also, refactor the Unicode
sequence handler function to remove redundant code. New
function add_unicode_digit(); changes to get_unicode_input()
and parse_verbatim_kninput(). (Benno Schulenberg, minor tweaks
by DLR)
- browser.c:
do_browser()
- Reference NANO_GOTODIR_(ALT|F)?KEY instead of
......@@ -295,6 +301,7 @@ CVS code -
get_byte_kbinput()
- Fix typo preventing Esc Esc 3 through Esc Esc 6 from being
interpreted as control key sequences. (DLR)
- Tweak to more closely match get_unicode_kbinput(). (DLR)
get_control_kbinput()
- Add Ctrl-/ as an alias for Ctrl-_. (DLR, found by Benno
Schulenberg)
......
src/proto.h
View file @ 12e3708e
......@@ -729,6 +729,7 @@ int get_escape_seq_abcd(int kbinput);
int parse_escape_seq_kbinput(int kbinput);
int get_byte_kbinput(int kbinput);
long get_unicode_kbinput(int kbinput);
long add_unicode_digit(int kbinput, long factor, long *uni);
int get_control_kbinput(int kbinput);
void unparse_kbinput(char *output, size_t output_len);
int *get_verbatim_kbinput(WINDOW *win, size_t *kbinput_len);
......
src/winio.c
View file @ 12e3708e
......@@ -1180,8 +1180,8 @@ int parse_escape_seq_kbinput(int kbinput)
return retval;
}
/* Translate a byte sequence: turn a three-digit decimal number from
* 000 to 255 into its corresponding byte value. */
/* Translate a byte sequence: turn a three-digit decimal number (from
* 000 to 255) into its corresponding byte value. */
int get_byte_kbinput(int kbinput)
{
static int byte_digits = 0, byte = 0;
......@@ -1192,47 +1192,49 @@ int get_byte_kbinput(int kbinput)
switch (byte_digits) {
case 1:
/* One digit: reset the byte sequence holder and add the
* digit we got to the 100's position of the byte sequence
* holder. */
byte = 0;
/* First digit: This must be from zero to two. Put it in
* the 100's position of the byte sequence holder. */
if ('0' <= kbinput && kbinput <= '2')
byte += (kbinput - '0') * 100;
byte = (kbinput - '0') * 100;
else
/* If the character we got isn't a decimal digit, or if
* it is and it would put the byte sequence out of byte
* range, save it as the result. */
/* This isn't the start of a byte sequence. Return this
* character as the result. */
retval = kbinput;
break;
case 2:
/* Two digits: add the digit we got to the 10's position of
* the byte sequence holder. */
/* Second digit: This must be from zero to five if the first
* was two, and may be any decimal value if the first was
* zero or one. Put it in the 10's position of the byte
* sequence holder. */
if (('0' <= kbinput && kbinput <= '5') || (byte < 200 &&
'6' <= kbinput && kbinput <= '9'))
byte += (kbinput - '0') * 10;
else
/* If the character we got isn't a decimal digit, or if
* it is and it would put the byte sequence out of byte
* range, save it as the result. */
/* This isn't the second digit of a byte sequence.
* Return this character as the result. */
retval = kbinput;
break;
case 3:
/* Three digits: add the digit we got to the 1's position of
* the byte sequence holder, and save the corresponding byte
* value as the result. */
/* Third digit: This must be from zero to five if the first
* was two and the second was between zero and five, and may
* be any decimal value if the first was zero or one and the
* second was between six and nine. Put it in the 1's
* position of the byte sequence holder. */
if (('0' <= kbinput && kbinput <= '5') || (byte < 250 &&
'6' <= kbinput && kbinput <= '9')) {
byte += (kbinput - '0');
/* If this character is a valid decimal value, then the
* byte sequence is complete. */
retval = byte;
} else
/* If the character we got isn't a decimal digit, or if
* it is and it would put the byte sequence out of byte
* range, save it as the result. */
/* This isn't the third digit of a byte sequence.
* Return this character as the result. */
retval = kbinput;
break;
default:
/* More than three digits: save the character we got as the
* result. */
/* If there are more than three digits, return this
* character as the result. (Maybe we should produce an
* error instead?) */
retval = kbinput;
break;
}
......@@ -1252,7 +1254,7 @@ int get_byte_kbinput(int kbinput)
}
/* Translate a Unicode sequence: turn a six-digit hexadecimal number
* from 000000 to 10FFFF (case-insensitive) into its corresponding
* (from 000000 to 10FFFF, case-insensitive) into its corresponding
* multibyte value. */
long get_unicode_kbinput(int kbinput)
{
......@@ -1265,92 +1267,57 @@ long get_unicode_kbinput(int kbinput)
switch (uni_digits) {
case 1:
/* One digit: reset the Unicode sequence holder and add the
* digit we got to the 0x100000's position of the Unicode
* sequence holder. */
uni = 0;
/* First digit: This must be zero or one. Put it in the
* 0x100000's position of the Unicode sequence holder. */
if ('0' <= kbinput && kbinput <= '1')
uni += (kbinput - '0') * 0x100000;
uni = (kbinput - '0') * 0x100000;
else
/* If the character we got isn't a hexadecimal digit, or
* if it is and it would put the Unicode sequence out of
* valid range, save it as the result. */
/* This isn't the first digit of a Unicode sequence.
* Return this character as the result. */
retval = kbinput;
break;
case 2:
/* Two digits: add the digit we got to the 0x10000's
* position of the Unicode sequence holder. */
if ('0' == kbinput || (uni < 0x100000 && '1' <= kbinput &&
kbinput <= '9'))
uni += (kbinput - '0') * 0x10000;
else if (uni < 0x100000 && 'a' <= tolower(kbinput) &&
tolower(kbinput) <= 'f')
uni += (tolower(kbinput) + 10 - 'a') * 0x10000;
/* Second digit: This must be zero if the first was one, and
* may be any hexadecimal value if the first was zero. Put
* it in the 0x10000's position of the Unicode sequence
* holder. */
if (uni == 0 || '0' == kbinput)
retval = add_unicode_digit(kbinput, 0x10000, &uni);
else
/* If the character we got isn't a hexadecimal digit, or
* if it is and it would put the Unicode sequence out of
* valid range, save it as the result. */
/* This isn't the second digit of a Unicode sequence.
* Return this character as the result. */
retval = kbinput;
break;
case 3:
/* Three digits: add the digit we got to the 0x1000's
* position of the Unicode sequence holder. */
if ('0' <= kbinput && kbinput <= '9')
uni += (kbinput - '0') * 0x1000;
else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
uni += (tolower(kbinput) + 10 - 'a') * 0x1000;
else
/* If the character we got isn't a hexadecimal digit, or
* if it is and it would put the Unicode sequence out of
* valid range, save it as the result. */
retval = kbinput;
/* Third digit: This may be any hexadecimal value. Put it
* in the 0x1000's position of the Unicode sequence
* holder. */
retval = add_unicode_digit(kbinput, 0x1000, &uni);
break;
case 4:
/* Four digits: add the digit we got to the 0x100's position
* of the Unicode sequence holder. */
if ('0' <= kbinput && kbinput <= '9')
uni += (kbinput - '0') * 0x100;
else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
uni += (tolower(kbinput) + 10 - 'a') * 0x100;
else
/* If the character we got isn't a hexadecimal digit, or
* if it is and it would put the Unicode sequence out of
* valid range, save it as the result. */
retval = kbinput;
/* Fourth digit: This may be any hexadecimal value. Put it
* in the 0x100's position of the Unicode sequence
* holder. */
retval = add_unicode_digit(kbinput, 0x100, &uni);
break;
case 5:
/* Five digits: add the digit we got to the 0x10's position
* of the Unicode sequence holder. */
if ('0' <= kbinput && kbinput <= '9')
uni += (kbinput - '0') * 0x10;
else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
uni += (tolower(kbinput) + 10 - 'a') * 0x10;
else
/* If the character we got isn't a hexadecimal digit, or
* if it is and it would put the Unicode sequence out of
* valid range, save it as the result. */
retval = kbinput;
/* Fifth digit: This may be any hexadecimal value. Put it
* in the 0x10's position of the Unicode sequence holder. */
retval = add_unicode_digit(kbinput, 0x10, &uni);
break;
case 6:
/* Six digits: add the digit we got to the 1's position of
* the Unicode sequence holder, and save the corresponding
* Unicode value as the result. */
if ('0' <= kbinput && kbinput <= '9') {
uni += (kbinput - '0');
retval = uni;
} else if ('a' <= tolower(kbinput) && tolower(kbinput) <=
'f') {
uni += (tolower(kbinput) + 10 - 'a');
/* Sixth digit: This may be any hexadecimal value. Put it
* in the 0x1's position of the Unicode sequence holder. */
retval = add_unicode_digit(kbinput, 0x1, &uni);
/* If this character is a valid hexadecimal value, then the
* Unicode sequence is complete. */
if (retval == ERR)
retval = uni;
} else
/* If the character we got isn't a hexadecimal digit, or
* if it is and it would put the Unicode sequence out of
* valid range, save it as the result. */
retval = kbinput;
break;
default:
/* More than six digits: save the character we got as the
* result. */
/* If there are more than six digits, return this character
* as the result. (Maybe we should produce an error
* instead?) */
retval = kbinput;
break;
}
......@@ -1369,6 +1336,24 @@ long get_unicode_kbinput(int kbinput)
return retval;
}
/* If the character in kbinput is a valid hexadecimal digit, multiply it
* by factor and add the result to uni. */
long add_unicode_digit(int kbinput, long factor, long *uni)
{
long retval = ERR;
if ('0' <= kbinput && kbinput <= '9')
*uni += (kbinput - '0') * factor;
else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
*uni += (tolower(kbinput) - 'a' + 10) * factor;
else
/* If this character isn't a valid hexadecimal value, save it as
* the result. */
retval = kbinput;
return retval;
}
/* Translate a control character sequence: turn an ASCII non-control
* character into its corresponding control character. */
int get_control_kbinput(int kbinput)
......@@ -1376,29 +1361,23 @@ int get_control_kbinput(int kbinput)
int retval;
/* Ctrl-Space (Ctrl-2, Ctrl-@, Ctrl-`) */
if (kbinput == ' ')
retval = kbinput - 32;
if (kbinput == ' ' || kbinput == '2')
retval = NANO_CONTROL_SPACE;
/* Ctrl-/ (Ctrl-7, Ctrl-_) */
else if (kbinput == '/')
retval = kbinput - 16;
/* Ctrl-2 (Ctrl-Space, Ctrl-@, Ctrl-`) */
else if (kbinput == '2')
retval = kbinput - 50;
retval = NANO_CONTROL_7;
/* Ctrl-3 (Ctrl-[, Esc) to Ctrl-7 (Ctrl-/, Ctrl-_) */
else if ('3' <= kbinput && kbinput <= '7')
retval = kbinput - 24;
/* Ctrl-8 (Ctrl-?) */
else if (kbinput == '8')
retval = kbinput + 71;
/* Ctrl-? (Ctrl-8) */
else if (kbinput == '?')
retval = kbinput + 64;
else if (kbinput == '8' || kbinput == '?')
retval = NANO_CONTROL_8;
/* Ctrl-@ (Ctrl-Space, Ctrl-2, Ctrl-`) to Ctrl-_ (Ctrl-/, Ctrl-7) */
else if ('@' <= kbinput && kbinput <= '_')
retval = kbinput - 64;
retval = kbinput - '@';
/* Ctrl-` (Ctrl-2, Ctrl-Space, Ctrl-@) to Ctrl-~ (Ctrl-6, Ctrl-^) */
else if ('`' <= kbinput && kbinput <= '~')
retval = kbinput - 96;
retval = kbinput - '`';
else
retval = kbinput;
......@@ -1465,11 +1444,12 @@ int *parse_verbatim_kbinput(WINDOW *win, size_t *kbinput_len)
/* Read in the first keystroke. */
while ((kbinput = get_input(win, 1)) == NULL);
/* Check whether the first keystroke is a hexadecimal digit. */
/* Check whether the first keystroke is a valid hexadecimal
* digit. */
uni = get_unicode_kbinput(*kbinput);
/* If the first keystroke isn't a hexadecimal digit, put back the
* first keystroke. */
/* If the first keystroke isn't a valid hexadecimal digit, put back
* the first keystroke. */
if (uni != ERR)
unget_input(kbinput, 1);
/* Otherwise, read in keystrokes until we have a complete Unicode
......@@ -1478,6 +1458,9 @@ int *parse_verbatim_kbinput(WINDOW *win, size_t *kbinput_len)
char *uni_mb;
int uni_mb_len, *seq, i;
if (win == edit)
statusbar(_("Unicode Input"));
while (uni == ERR) {
while ((kbinput = get_input(win, 1)) == NULL);
......
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