commit f0a53f02a10b1383be8cd7929edb24214562a3ca
parent 423326fc7174b903b8e69ff99306aac24a001747
Author: David Lawrence Ramsey <pooka109@gmail.com>
Date: Mon, 3 Jan 2005 19:56:56 +0000
readd get_byte_kbinput(), modify get_word_kbinput() to handle
hexadecimal instead of decimal values, make normal input use
get_byte_kbinput(), make verbatim input use get_word_kbinput(), and
update faq.html to mention these changes
git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2221 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
Diffstat:
5 files changed, 177 insertions(+), 96 deletions(-)
diff --git a/ChangeLog b/ChangeLog
@@ -34,21 +34,20 @@ CVS code -
properly again. (DLR, found by Arthur Ivanov)
- Massively overhaul the input and output routines to support
buffered input and output, the first steps toward
- wide/multibyte character input and output, and
- double-Escape/verbatim input of double-byte Unicode characters
- instead of single-byte ASCII characters. New functions
- is_byte_char(), get_buffer(), get_buffer_len(),
- buffer_to_keys(), unget_input(), get_input(), parse_kbinput(),
- and parse_verbatim_kbinput(); new macro charcpy(); changes to
- do_char() (renamed to do_output()), get_edit_input() (renamed
- to do_input() and moved to nano.c), get_edit_mouse() (renamed
- do_mouse() and moved to nano.c), do_verbatim_input(),
- do_tab(), main(), and get_ascii_kbinput() (renamed to
- get_word_kbinput()). The wide version of ncurses is required
- in order for wide/multibyte input and output to work properly.
- (DLR; buffered input/output based on ideas from mutt 1.4.2.1;
- double-Escape input of Unicode characters suggested by Michael
- Piefel)
+ wide/multibyte character input and output, and verbatim input
+ of double-byte Unicode characters instead of single-byte ASCII
+ characters. New functions is_byte_char(), get_buffer(),
+ get_buffer_len(), buffer_to_keys(), unget_input(),
+ get_input(), parse_kbinput(), and parse_verbatim_kbinput();
+ new macro charcpy(); changes to do_char() (renamed to
+ do_output()), get_edit_input() (renamed to do_input() and
+ moved to nano.c), get_edit_mouse() (renamed do_mouse() and
+ moved to nano.c), do_verbatim_input(), do_tab(), main(), and
+ get_ascii_kbinput() (renamed to get_word_kbinput()). The wide
+ version of ncurses is required in order for wide/multibyte
+ input and output to work properly. (DLR; buffered input/output
+ based on ideas from mutt 1.4.2.1; input of Unicode characters
+ in hexadecimal suggested by Michael Piefel)
- More steps toward wide character/multibyte character support.
Movement and cursor display in the edit window should now work
properly with files containing multibyte characters, and text
@@ -190,7 +189,8 @@ CVS code -
- Typo fixes. (DLR)
- doc/faq.html:
- Remove now-inaccurate note about verbatim input's not working
- at prompts. (DLR)
+ at prompts, and update its description to mention that it
+ handles hexadecimal values now. (DLR)
- doc/nanorc.sample:
- Add return to the "c-file" regexes. (DLR)
diff --git a/doc/faq.html b/doc/faq.html
@@ -166,7 +166,7 @@
<p>You can move between the buffers you have open with the <b>Meta-<</b> and <b>Meta-></b> keys, or more easily with <b>Meta-,</b> and <b>Meta-.</b> (clear as mud, right? =-). When you have more than one file buffer open, the ^X shortcut will say "Close", instead of the normal "Exit" when only one buffer is open.</p></blockquote>
<h2><a name="3.8"></a>3.8. Tell me more about this verbatim input stuff!</h2>
<blockquote><p>To use verbatim input, you must be using nano 1.3.1 or newer. When you want to insert a literal character into the file you're editing, such as a control character that nano usually treats as a command, first press <b>Meta-V</b>. (If you're not at a prompt, you'll get the message "Verbatim input".) Then press the key(s) that generate the character you want.</p>
- <p>Alternatively, you can press <b>Meta-V</b> and then type a three-digit ASCII code from 000 to 255, and the character with that ASCII code will be inserted instead.</p></blockquote>
+ <p>Alternatively, you can press <b>Meta-V</b> and then type a four-digit hexadecimal code from 0000 to ffff (case-insensitive), and the character with the corresponding value will be inserted instead.</p></blockquote>
<h2><a name="3.9"></a>3.9. How do I make a .nanorc file that nano will read when I start it?</h2>
<blockquote><p>It's not hard at all! But, your version of nano must have been compiled with <b>--enable-nanorc</b>, and again must be version 1.1.12 or newer (use nano -V to check your version and compiled features). Then simply copy the <b>nanorc.sample</b> that came with the nano source or your nano package (most likely in /usr/doc/nano) to .nanorc in your home directory. If you didn't get one, the syntax is simple. Flags are turned on and off by using the word <b>set</b> and the getopt_long flag for the feature, for example "set nowrap" or "set suspend".</p></blockquote>
<hr width="100%">
@@ -244,7 +244,7 @@
<h2><a name="8"></a>8. ChangeLog</h2>
<blockquote>
<p>
-2005/01/02 - Remove now-inaccurate note about verbatim input's not working at prompts. (DLR)
+2005/01/03 - Remove now-inaccurate note about verbatim input's not working at prompts, and update its description to mention that it handles hexadecimal values now. (DLR)
2004/11/21 - List sh as an example of a Bourne shell. (DLR)
2004/11/05 - Fixed inaccuracy: Pico compatibility mode was made the default in nano 1.1.99pre1, not 1.2.2. Also added question about how to type F13-F16 on terminals lacking keys past F12 (suggested by Chris), question about how to select text for the clipboard in X terminals with nano's mouse support turned on (answer found by Joseph Birthisel), and misc. fixes and link updates. (DLR)<br>
2004/04/07 - Removed NumLock glitch question, as it's no longer needed. (DLR)<br>
diff --git a/src/nano.c b/src/nano.c
@@ -372,9 +372,9 @@ void help_init(void)
"(M) symbol and can be entered using either the Esc, Alt or "
"Meta key depending on your keyboard setup. Also, pressing Esc "
"twice and then typing a three-digit number from 000 to 255 "
- "will enter the character with the corresponding ASCII code. "
- "The following keystrokes are available in the main editor "
- "window. Alternative keys are shown in parentheses:\n\n");
+ "will enter the character with the corresponding value. The "
+ "following keystrokes are available in the main editor window. "
+ "Alternative keys are shown in parentheses:\n\n");
htx = _(htx);
diff --git a/src/proto.h b/src/proto.h
@@ -555,6 +555,11 @@ int parse_kbinput(WINDOW *win, bool *meta_key, bool *func_key
int get_escape_seq_kbinput(const int *sequence, size_t seq_len, bool
*ignore_seq);
int get_escape_seq_abcd(int kbinput);
+int get_byte_kbinput(int kbinput
+#ifndef NANO_SMALL
+ , bool reset
+#endif
+ );
int get_word_kbinput(int kbinput
#ifndef NANO_SMALL
, bool reset
diff --git a/src/winio.c b/src/winio.c
@@ -121,6 +121,7 @@ static bool resetstatuspos = FALSE;
void reset_kbinput(void)
{
parse_kbinput(NULL, NULL, NULL, TRUE);
+ get_byte_kbinput(0, TRUE);
get_word_kbinput(0, TRUE);
}
#endif
@@ -439,14 +440,14 @@ int parse_kbinput(WINDOW *win, bool *meta_key, bool *func_key
)
{
- static int escapes = 0, word_digits = 0;
+ static int escapes = 0, byte_digits = 0;
buffer *kbinput;
int retval = ERR;
#ifndef NANO_SMALL
if (reset) {
escapes = 0;
- word_digits = 0;
+ byte_digits = 0;
return ERR;
}
#endif
@@ -646,48 +647,47 @@ int parse_kbinput(WINDOW *win, bool *meta_key, bool *func_key
break;
case 2:
/* Two escapes followed by one or more decimal
- * digits: word sequence mode. If the word
- * sequence's range is limited to 6XXXX (the
- * first digit is in the '0' to '6' range and
- * it's the first digit, or it's in the '0' to
- * '9' range and it's not the first digit),
- * increment the word sequence counter and
- * interpret the digit. If the word sequence's
- * range is not limited to 6XXXX, fall
- * through. */
+ * digits: byte sequence mode. If the word
+ * sequence's range is limited to 2XX (the first
+ * digit is in the '0' to '2' range and it's the
+ * first digit, or it's in the '0' to '9' range
+ * and it's not the first digit), increment the
+ * byte sequence counter and interpret the
+ * digit. If the byte sequence's range is not
+ * limited to 2XX, fall through. */
if (('0' <= kbinput->key && kbinput->key <= '6'
- && word_digits == 0) ||
+ && byte_digits == 0) ||
('0' <= kbinput->key && kbinput->key <= '9'
- && word_digits > 0)) {
- int word_kbinput;
+ && byte_digits > 0)) {
+ int byte_kbinput;
- word_digits++;
- word_kbinput = get_word_kbinput(kbinput->key
+ byte_digits++;
+ byte_kbinput = get_byte_kbinput(kbinput->key
#ifndef NANO_SMALL
, FALSE
#endif
);
- if (word_kbinput != ERR) {
- /* If we've read in a complete word
- * sequence, reset the word sequence
+ if (byte_kbinput != ERR) {
+ /* If we've read in a complete byte
+ * sequence, reset the byte sequence
* counter and the escape counter,
- * and put back the corresponding word
+ * and put back the corresponding byte
* value. */
- word_digits = 0;
+ byte_digits = 0;
escapes = 0;
- unget_kbinput(word_kbinput, FALSE,
+ unget_kbinput(byte_kbinput, FALSE,
FALSE);
}
} else {
/* Reset the escape counter. */
escapes = 0;
- if (word_digits == 0)
+ if (byte_digits == 0)
/* Two escapes followed by a non-decimal
* digit or a decimal digit that would
- * create a word sequence greater than
- * 6XXXX, and we're not in the middle of
- * a word sequence: control character
+ * create a byte sequence greater than
+ * 2XX, and we're not in the middle of a
+ * byte sequence: control character
* sequence mode. Interpret the control
* sequence and save the corresponding
* control character as the result. */
@@ -697,7 +697,7 @@ int parse_kbinput(WINDOW *win, bool *meta_key, bool *func_key
* sequence, reset the word sequence
* counter and save the character we got
* as the result. */
- word_digits = 0;
+ byte_digits = 0;
retval = kbinput->key;
}
}
@@ -715,7 +715,7 @@ int parse_kbinput(WINDOW *win, bool *meta_key, bool *func_key
retval = kbinput->key;
#ifdef DEBUG
- fprintf(stderr, "parse_kbinput(): kbinput->key = %d, meta_key = %d, func_key = %d, escapes = %d, word_digits = %d, retval = %d\n", kbinput->key, (int)*meta_key, (int)*func_key, escapes, word_digits, retval);
+ fprintf(stderr, "parse_kbinput(): kbinput->key = %d, meta_key = %d, func_key = %d, escapes = %d, byte_digits = %d, retval = %d\n", kbinput->key, (int)*meta_key, (int)*func_key, escapes, byte_digits, retval);
#endif
/* Return the result. */
@@ -1250,98 +1250,174 @@ int get_escape_seq_abcd(int kbinput)
}
}
-/* Translate a word sequence: turn a five-digit decimal number from
- * 00000 to 65535 into its corresponding word value. */
-int get_word_kbinput(int kbinput
+/* 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
#ifndef NANO_SMALL
, bool reset
#endif
)
{
- static int word_digits = 0, word_kbinput = 0;
+ static int byte_digits = 0, byte_kbinput = 0;
int retval = ERR;
#ifndef NANO_SMALL
if (reset) {
- word_digits = 0;
- word_kbinput = 0;
+ byte_digits = 0;
+ byte_kbinput = 0;
return ERR;
}
#endif
- /* Increment the word digit counter. */
- word_digits++;
+ /* Increment the byte digit counter. */
+ byte_digits++;
- switch (word_digits) {
+ switch (byte_digits) {
case 1:
- /* One digit: reset the word sequence holder and add the
- * digit we got to the 10000's position of the word sequence
+ /* One digit: reset the byte sequence holder and add the
+ * digit we got to the 100's position of the byte sequence
* holder. */
- word_kbinput = 0;
- if ('0' <= kbinput && kbinput <= '6')
- word_kbinput += (kbinput - '0') * 10000;
+ byte_kbinput = 0;
+ if ('0' <= kbinput && kbinput <= '2')
+ byte_kbinput += (kbinput - '0') * 100;
else
/* If the character we got isn't a decimal digit, or if
- * it is and it would put the word sequence out of word
+ * it is and it would put the byte sequence out of byte
* range, save it as the result. */
retval = kbinput;
break;
case 2:
- /* Two digits: add the digit we got to the 1000's position
- * of the word sequence holder. */
+ /* Two digits: add the digit we got to the 10's position of
+ * the byte sequence holder. */
if (('0' <= kbinput && kbinput <= '5') ||
- (word_kbinput < 60000 && '6' <= kbinput &&
+ (byte_kbinput < 200 && '6' <= kbinput &&
kbinput <= '9'))
- word_kbinput += (kbinput - '0') * 1000;
+ byte_kbinput += (kbinput - '0') * 10;
else
/* If the character we got isn't a decimal digit, or if
- * it is and it would put the word sequence out of word
+ * it is and it would put the byte sequence out of byte
* range, save it as the result. */
retval = kbinput;
break;
case 3:
- /* Three digits: add the digit we got to the 100's position
- * of the word sequence holder. */
+ /* Three digits: add the digit we got to the 1's position of
+ * the byte sequence holder, and save the corresponding word
+ * value as the result. */
if (('0' <= kbinput && kbinput <= '5') ||
- (word_kbinput < 65000 && '6' <= kbinput &&
- kbinput <= '9'))
- word_kbinput += (kbinput - '0') * 100;
- else
+ (byte_kbinput < 250 && '6' <= kbinput &&
+ kbinput <= '9')) {
+ byte_kbinput += (kbinput - '0');
+ retval = byte_kbinput;
+ } else
/* If the character we got isn't a decimal digit, or if
* it is and it would put the word sequence out of word
* range, save it as the result. */
retval = kbinput;
break;
- case 4:
- /* Four digits: add the digit we got to the 10's position of
+ default:
+ /* More than three digits: save the character we got as the
+ * result. */
+ retval = kbinput;
+ break;
+ }
+
+ /* If we have a result, reset the byte digit counter and the byte
+ * sequence holder. */
+ if (retval != ERR) {
+ byte_digits = 0;
+ byte_kbinput = 0;
+ }
+
+#ifdef DEBUG
+ fprintf(stderr, "get_byte_kbinput(): kbinput = %d, byte_digits = %d, byte_kbinput = %d, retval = %d\n", kbinput, byte_digits, byte_kbinput, retval);
+#endif
+
+ return retval;
+}
+
+/* Translate a word sequence: turn a four-digit hexadecimal number from
+ * 0000 to ffff (case-insensitive) into its corresponding word value. */
+int get_word_kbinput(int kbinput
+#ifndef NANO_SMALL
+ , bool reset
+#endif
+ )
+{
+ static int word_digits = 0, word_kbinput = 0;
+ int retval = ERR;
+
+#ifndef NANO_SMALL
+ if (reset) {
+ word_digits = 0;
+ word_kbinput = 0;
+ return ERR;
+ }
+#endif
+
+ /* Increment the word digit counter. */
+ word_digits++;
+
+ switch (word_digits) {
+ case 1:
+ /* One digit: reset the word sequence holder and add the
+ * digit we got to the 4096's position of the word sequence
+ * holder. */
+ word_kbinput = 0;
+ if ('0' <= kbinput && kbinput <= '9')
+ word_kbinput += (kbinput - '0') * 4096;
+ else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
+ word_kbinput += (tolower(kbinput) + 10 - 'a') * 4096;
+ else
+ /* If the character we got isn't a hexadecimal digit, or
+ * if it is and it would put the word sequence out of
+ * word range, save it as the result. */
+ retval = kbinput;
+ break;
+ case 2:
+ /* Two digits: add the digit we got to the 256's position of
* the word sequence holder. */
- if (('0' <= kbinput && kbinput <= '3') ||
- (word_kbinput < 65500 && '4' <= kbinput &&
- kbinput <= '9'))
- word_kbinput += (kbinput - '0') * 10;
+ if ('0' <= kbinput && kbinput <= '9')
+ word_kbinput += (kbinput - '0') * 256;
+ else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
+ word_kbinput += (tolower(kbinput) + 10 - 'a') * 256;
else
- /* If the character we got isn't a decimal digit, or if
- * it is and it would put the word sequence out of word
- * range, save it as the result. */
+ /* If the character we got isn't a hexadecimal digit, or
+ * if it is and it would put the word sequence out of
+ * word range, save it as the result. */
retval = kbinput;
break;
- case 5:
- /* Five digits: add the digit we got to the 1's position of
+ case 3:
+ /* Three digits: add the digit we got to the 16's position
+ * of the word sequence holder. */
+ if ('0' <= kbinput && kbinput <= '9')
+ word_kbinput += (kbinput - '0') * 16;
+ else if ('a' <= tolower(kbinput) && tolower(kbinput) <= 'f')
+ word_kbinput += (tolower(kbinput) + 10 - 'a') * 16;
+ else
+ /* If the character we got isn't a hexadecimal digit, or
+ * if it is and it would put the word sequence out of
+ * word range, save it as the result. */
+ retval = kbinput;
+ break;
+ case 4:
+ /* Four digits: add the digit we got to the 1's position of
* the word sequence holder, and save the corresponding word
* value as the result. */
- if (('0' <= kbinput && kbinput <= '5') ||
- (word_kbinput < 65530 && '6' <= kbinput &&
- kbinput <= '9')) {
+ if ('0' <= kbinput && kbinput <= '9') {
word_kbinput += (kbinput - '0');
retval = word_kbinput;
+ } else if ('a' <= tolower(kbinput) &&
+ tolower(kbinput) <= 'f') {
+ word_kbinput += (tolower(kbinput) + 10 - 'a');
+ retval = word_kbinput;
} else
- /* If the character we got isn't a decimal digit, or if
- * it is and it would put the word sequence out of word
- * range, save it as the result. */
+ /* If the character we got isn't a hexadecimal digit, or
+ * if it is and it would put the word sequence out of
+ * word range, save it as the result. */
retval = kbinput;
break;
default:
- /* More than three digits: save the character we got as the
+ /* More than four digits: save the character we got as the
* result. */
retval = kbinput;
break;
@@ -1444,15 +1520,15 @@ 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 decimal digit. */
+ /* Check whether the first keystroke is a hexadecimal digit. */
word = get_word_kbinput(kbinput->key
#ifndef NANO_SMALL
, FALSE
#endif
);
- /* If the first keystroke isn't a decimal digit, put back the first
- * keystroke. */
+ /* If the first keystroke isn't a hexadecimal digit, put back the
+ * first keystroke. */
if (word != ERR)
unget_input(kbinput, 1);
/* Otherwise, read in keystrokes until we have a complete word
