From a809bc0f49ee4c6e777f39d1f80ee57862a0fcab Mon Sep 17 00:00:00 2001 From: Peter Mikkelsen Date: Wed, 1 Apr 2026 22:24:22 +0200 Subject: Initial import of the code into git --- lib/autocomplete.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 lib/autocomplete.c (limited to 'lib/autocomplete.c') diff --git a/lib/autocomplete.c b/lib/autocomplete.c new file mode 100644 index 0000000..12a8cdc --- /dev/null +++ b/lib/autocomplete.c @@ -0,0 +1,94 @@ +/* Aplwc - A Programming Language With Constraints + * + * Copyright (C) 2026 Peter Mikkelsen + * + * This file is part of aplwc. + * + * Aplwc is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Aplwc is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with aplwc. If not, see . + */ + +#include +#include +#include +#include +#include "aplwc_internal.h" + +struct completion_state { + const struct aplwc *aplwc; + int num; + const char *word; + const int wordlen; +}; + +static char **generate(struct aplwc *, const char *, char *(*)(struct completion_state *)); +static char *completions_syscmd(struct completion_state *); + +char ** +aplwc_autocomplete(struct aplwc *aplwc, const char *line, int start, int end) +{ + int len = end-start; + char *word = malloc(sizeof(char) * len+1); + char **completions = NULL; + + memcpy(word, line+start, len); + word[len] = 0; + + if(start == 0 && word[0] == ')') + completions = generate(aplwc, word, completions_syscmd); + free(word); + + return completions; +} + +static char ** +generate(struct aplwc *aplwc, const char *word, char *(*fn)(struct completion_state *)) +{ + char **completions = NULL; + struct completion_state state = { + .aplwc = aplwc, + .num = 0, + .word = word, + .wordlen = strlen(word), + }; + + char *c; + int index = 0; + while(c = fn(&state)){ + index++; + completions = realloc(completions, sizeof(*completions) * (index + 1)); + completions[index-1] = c; + completions[index] = NULL; + } + + return completions; +} + +static char * +completions_syscmd(struct completion_state *state) +{ + struct aplwc_syscmd *syscmd; + + while(syscmd = state->aplwc->syscmds[state->num++]){ + const char *name = syscmd->name; + if(strncmp(name, state->word+1, state->wordlen-1) == 0){ + int len = strlen(name); + char *result = malloc(sizeof(char) * (len + 2)); + result[0] = ')'; + memcpy(result+1, name, sizeof(char) * (len+1)); + return result; + } + } + + return NULL; +} -- cgit v1.2.3