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tweaks: condense and rewrap some comments, and reindent two lines 

Also drop an old debugging fragment.
This commit is contained in:
Benno Schulenberg 2018-01-11 10:51:18 +01:00
parent 091dd71f08
commit 2c8b99d5e9
1 changed files with 12 additions and 22 deletions
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34
src/winio.c
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@ -1270,13 +1270,15 @@ int parse_escape_sequence(WINDOW *win, int kbinput)
return retval;
}
/* Translate a byte sequence: turn a three-digit decimal number (from
* 000 to 255) into its corresponding byte value. */
/* Turn a three-digit decimal number (from 000 to 255) into its corresponding
* byte value. */
int get_byte_kbinput(int kbinput)
{
static int byte = 0;
int retval = ERR;
/* Check that the given digit is within the allowed range for its position.
* If yes, store it. If no, return the digit (or character) itself. */
switch (++byte_digits) {
case 1:
/* First digit: This must be from zero to two. Put it in
@ -1284,36 +1286,28 @@ int get_byte_kbinput(int kbinput)
if ('0' <= kbinput && kbinput <= '2')
byte = (kbinput - '0') * 100;
else
/* This isn't the start of a byte sequence. Return this
* character as the result. */
retval = kbinput;
break;
case 2:
/* 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. */
/* 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'))
'6' <= kbinput && kbinput <= '9'))
byte += (kbinput - '0') * 10;
else
/* This isn't the second digit of a byte sequence.
* Return this character as the result. */
retval = kbinput;
break;
case 3:
/* Third digit: This must be from zero to five if the first
* was two and the second was five, and may be any decimal
* value otherwise. Put it in the 1's position of the byte
* sequence holder. */
/* Third digit: Must be from zero to five if the first was two and
* the second was five, and may be any decimal value otherwise.
* Put it in the 1's position of the byte sequence holder. */
if (('0' <= kbinput && kbinput <= '5') || (byte < 250 &&
'6' <= kbinput && kbinput <= '9')) {
'6' <= kbinput && kbinput <= '9')) {
byte += kbinput - '0';
/* The byte sequence is complete. */
retval = byte;
} else
/* This isn't the third digit of a byte sequence.
* Return this character as the result. */
retval = kbinput;
break;
}
@ -1324,10 +1318,6 @@ int get_byte_kbinput(int kbinput)
byte = 0;
}
#ifdef DEBUG
fprintf(stderr, "get_byte_kbinput(): kbinput = %d, byte_digits = %d, byte = %d, retval = %d\n", kbinput, byte_digits, byte, retval);
#endif
return retval;
}