44cb1666e
Denys Vlasenko
2017-09-14
Subject
hexedit: code shrink
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miscutils/hexedit.c+5 -4
| @@ -274,7 +274,7 @@ int hexedit_main(int argc UNUSED_PARAM, char **argv) | |
| for (;;) { | |
| unsigned cnt; | |
| - | int32_t key = key; // for compiler |
| + | int32_t key = key; /* for compiler */ |
| uint8_t byte; | |
| fflush_all(); | |
| @@ -286,11 +286,12 @@ int hexedit_main(int argc UNUSED_PARAM, char **argv) | |
| key = CTRL('X'); | |
| cnt = 1; | |
| + | if ((unsigned)(key - 'A') <= 'Z' - 'A') |
| + | key |= 0x20; /* convert A-Z to a-z */ |
| switch (key) { | |
| - | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': |
| case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| - | /* lowercase, then convert to '0'+10...15 */ |
| - | key = (key | 0x20) - ('a' - '0' - 10); |
| + | /* convert to '0'+10...15 */ |
| + | key = key - ('a' - '0' - 10); |
| /* fall through */ | |
| case '0': case '1': case '2': case '3': case '4': | |
| case '5': case '6': case '7': case '8': case '9': | |