ref: 6c26e2617c8cabdb8e05ca0f7180123a169b13a2
dir: /tools/lz/packing.c/
#include "proto.h" void optimize (struct command * commands, unsigned short count) { while (count && (commands -> command == 7)) commands ++, count --; if (count < 2) return; struct command * end = commands + count; struct command * next; for (next = commands + 1; next < end; next ++) { if (next -> command == 7) continue; if ( !(commands -> command) && (command_size(*next) == next -> count) && ((commands -> count + next -> count) <= MAX_COMMAND_COUNT) && ((commands -> count > SHORT_COMMAND_COUNT) || ((commands -> count + next -> count) <= SHORT_COMMAND_COUNT)) ) { commands -> count += next -> count; next -> command = 7; continue; } if (next -> command == commands -> command) switch (commands -> command) { case 0: if ((commands -> value + commands -> count) != next -> value) break; commands -> count += next -> count; next -> command = 7; if (commands -> count <= MAX_COMMAND_COUNT) continue; next -> command = 0; next -> value = commands -> value + MAX_COMMAND_COUNT; next -> count = commands -> count - MAX_COMMAND_COUNT; commands -> count = MAX_COMMAND_COUNT; break; case 1: if (commands -> value != next -> value) break; // fallthrough case 3: if ((commands -> count + next -> count) <= MAX_COMMAND_COUNT) { commands -> count += next -> count; next -> command = 7; continue; } next -> count = (commands -> count + next -> count) - MAX_COMMAND_COUNT; commands -> count = MAX_COMMAND_COUNT; } commands = next; } } void repack (struct command ** commands, unsigned short * length) { struct command * new_commands = malloc(sizeof(struct command) * *length); struct command * current = new_commands; unsigned short p; for (p = 0; p < *length; p ++) if (p[*commands].command != 7) *(current ++) = p[*commands]; free(*commands); *commands = new_commands; *length = current - new_commands; }