+++ /dev/null
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2016, Olivier MATZ <zer0@droids-corp.org>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include <ecoli_malloc.h>
-#include <ecoli_log.h>
-#include <ecoli_string.h>
-#include <ecoli_test.h>
-#include <ecoli_strvec.h>
-#include <ecoli_node.h>
-#include <ecoli_parse.h>
-#include <ecoli_complete.h>
-#include <ecoli_node_seq.h>
-#include <ecoli_node_str.h>
-#include <ecoli_node_option.h>
-#include <ecoli_node_sh_lex.h>
-
-EC_LOG_TYPE_REGISTER(node_sh_lex);
-
-struct ec_node_sh_lex {
- struct ec_node gen;
- struct ec_node *child;
-};
-
-static size_t eat_spaces(const char *str)
-{
- size_t i = 0;
-
- /* skip spaces */
- while (isblank(str[i]))
- i++;
-
- return i;
-}
-
-/*
- * Allocate a new string which is a copy of the input string with quotes
- * removed. If quotes are not closed properly, set missing_quote to the
- * missing quote char.
- */
-static char *unquote_str(const char *str, size_t n, int allow_missing_quote,
- char *missing_quote)
-{
- unsigned s = 1, d = 0;
- char quote = str[0];
- char *dst;
- int closed = 0;
-
- dst = ec_malloc(n);
- if (dst == NULL) {
- errno = ENOMEM;
- return NULL;
- }
-
- /* copy string and remove quotes */
- while (s < n && d < n && str[s] != '\0') {
- if (str[s] == '\\' && str[s+1] == quote) {
- dst[d++] = quote;
- s += 2;
- continue;
- }
- if (str[s] == '\\' && str[s+1] == '\\') {
- dst[d++] = '\\';
- s += 2;
- continue;
- }
- if (str[s] == quote) {
- s++;
- closed = 1;
- break;
- }
- dst[d++] = str[s++];
- }
-
- /* not enough room in dst buffer (should not happen) */
- if (d >= n) {
- ec_free(dst);
- errno = EMSGSIZE;
- return NULL;
- }
-
- /* quote not closed */
- if (closed == 0) {
- if (missing_quote != NULL)
- *missing_quote = str[0];
- if (allow_missing_quote == 0) {
- ec_free(dst);
- errno = EBADMSG;
- return NULL;
- }
- }
- dst[d++] = '\0';
-
- return dst;
-}
-
-static size_t eat_quoted_str(const char *str)
-{
- size_t i = 0;
- char quote = str[0];
-
- while (str[i] != '\0') {
- if (str[i] != '\\' && str[i+1] == quote)
- return i + 2;
- i++;
- }
-
- /* unclosed quote, will be detected later */
- return i;
-}
-
-static size_t eat_str(const char *str)
-{
- size_t i = 0;
-
- /* eat chars until we find a quote, space, or end of string */
- while (!isblank(str[i]) && str[i] != '\0' &&
- str[i] != '"' && str[i] != '\'')
- i++;
-
- return i;
-}
-
-static struct ec_strvec *tokenize(const char *str, int completion,
- int allow_missing_quote, char *missing_quote)
-{
- struct ec_strvec *strvec = NULL;
- size_t off = 0, len, suboff, sublen;
- char *word = NULL, *concat = NULL, *tmp;
- int last_is_space = 1;
-
- strvec = ec_strvec();
- if (strvec == NULL)
- goto fail;
-
- while (str[off] != '\0') {
- if (missing_quote != NULL)
- *missing_quote = '\0';
- len = eat_spaces(&str[off]);
- if (len > 0)
- last_is_space = 1;
- off += len;
-
- len = 0;
- suboff = off;
- while (str[suboff] != '\0') {
- if (missing_quote != NULL)
- *missing_quote = '\0';
- last_is_space = 0;
- if (str[suboff] == '"' || str[suboff] == '\'') {
- sublen = eat_quoted_str(&str[suboff]);
- word = unquote_str(&str[suboff], sublen,
- allow_missing_quote, missing_quote);
- } else {
- sublen = eat_str(&str[suboff]);
- if (sublen == 0)
- break;
- word = ec_strndup(&str[suboff], sublen);
- }
-
- if (word == NULL)
- goto fail;
-
- len += sublen;
- suboff += sublen;
-
- if (concat == NULL) {
- concat = word;
- word = NULL;
- } else {
- tmp = ec_realloc(concat, len + 1);
- if (tmp == NULL)
- goto fail;
- concat = tmp;
- strcat(concat, word);
- ec_free(word);
- word = NULL;
- }
- }
-
- if (concat != NULL) {
- if (ec_strvec_add(strvec, concat) < 0)
- goto fail;
- ec_free(concat);
- concat = NULL;
- }
-
- off += len;
- }
-
- /* in completion mode, append an empty string in the vector if
- * the input string ends with space */
- if (completion && last_is_space) {
- if (ec_strvec_add(strvec, "") < 0)
- goto fail;
- }
-
- return strvec;
-
- fail:
- ec_free(word);
- ec_free(concat);
- ec_strvec_free(strvec);
- return NULL;
-}
-
-static int
-ec_node_sh_lex_parse(const struct ec_node *gen_node,
- struct ec_parse *state,
- const struct ec_strvec *strvec)
-{
- struct ec_node_sh_lex *node = (struct ec_node_sh_lex *)gen_node;
- struct ec_strvec *new_vec = NULL;
- struct ec_parse *child_parse;
- const char *str;
- int ret;
-
- if (ec_strvec_len(strvec) == 0) {
- new_vec = ec_strvec();
- } else {
- str = ec_strvec_val(strvec, 0);
- new_vec = tokenize(str, 0, 0, NULL);
- }
- if (new_vec == NULL && errno == EBADMSG) /* quotes not closed */
- return EC_PARSE_NOMATCH;
- if (new_vec == NULL)
- goto fail;
-
- ret = ec_node_parse_child(node->child, state, new_vec);
- if (ret < 0)
- goto fail;
-
- if ((unsigned)ret == ec_strvec_len(new_vec)) {
- ret = 1;
- } else if (ret != EC_PARSE_NOMATCH) {
- child_parse = ec_parse_get_last_child(state);
- ec_parse_unlink_child(state, child_parse);
- ec_parse_free(child_parse);
- ret = EC_PARSE_NOMATCH;
- }
-
- ec_strvec_free(new_vec);
- new_vec = NULL;
-
- return ret;
-
- fail:
- ec_strvec_free(new_vec);
- return -1;
-}
-
-static int
-ec_node_sh_lex_complete(const struct ec_node *gen_node,
- struct ec_comp *comp,
- const struct ec_strvec *strvec)
-{
- struct ec_node_sh_lex *node = (struct ec_node_sh_lex *)gen_node;
- struct ec_comp *tmp_comp = NULL;
- struct ec_strvec *new_vec = NULL;
- struct ec_comp_iter *iter = NULL;
- struct ec_comp_item *item = NULL;
- char *new_str = NULL;
- const char *str;
- char missing_quote = '\0';
- int ret;
-
- if (ec_strvec_len(strvec) != 1)
- return 0;
-
- str = ec_strvec_val(strvec, 0);
- new_vec = tokenize(str, 1, 1, &missing_quote);
- if (new_vec == NULL)
- goto fail;
-
- /* we will store the completions in a temporary struct, because
- * we want to update them (ex: add missing quotes) */
- tmp_comp = ec_comp(ec_comp_get_state(comp));
- if (tmp_comp == NULL)
- goto fail;
-
- ret = ec_node_complete_child(node->child, tmp_comp, new_vec);
- if (ret < 0)
- goto fail;
-
- /* add missing quote for full completions */
- if (missing_quote != '\0') {
- iter = ec_comp_iter(tmp_comp, EC_COMP_FULL);
- if (iter == NULL)
- goto fail;
- while ((item = ec_comp_iter_next(iter)) != NULL) {
- str = ec_comp_item_get_str(item);
- if (ec_asprintf(&new_str, "%c%s%c", missing_quote, str,
- missing_quote) < 0) {
- new_str = NULL;
- goto fail;
- }
- if (ec_comp_item_set_str(item, new_str) < 0)
- goto fail;
- ec_free(new_str);
- new_str = NULL;
-
- str = ec_comp_item_get_completion(item);
- if (ec_asprintf(&new_str, "%s%c", str,
- missing_quote) < 0) {
- new_str = NULL;
- goto fail;
- }
- if (ec_comp_item_set_completion(item, new_str) < 0)
- goto fail;
- ec_free(new_str);
- new_str = NULL;
- }
- }
-
- ec_comp_iter_free(iter);
- ec_strvec_free(new_vec);
-
- ec_comp_merge(comp, tmp_comp);
-
- return 0;
-
- fail:
- ec_comp_free(tmp_comp);
- ec_comp_iter_free(iter);
- ec_strvec_free(new_vec);
- ec_free(new_str);
-
- return -1;
-}
-
-static void ec_node_sh_lex_free_priv(struct ec_node *gen_node)
-{
- struct ec_node_sh_lex *node = (struct ec_node_sh_lex *)gen_node;
-
- ec_node_free(node->child);
-}
-
-static size_t
-ec_node_sh_lex_get_children_count(const struct ec_node *gen_node)
-{
- struct ec_node_sh_lex *node = (struct ec_node_sh_lex *)gen_node;
-
- if (node->child)
- return 1;
- return 0;
-}
-
-static int
-ec_node_sh_lex_get_child(const struct ec_node *gen_node, size_t i,
- struct ec_node **child, unsigned int *refs)
-{
- struct ec_node_sh_lex *node = (struct ec_node_sh_lex *)gen_node;
-
- if (i >= 1)
- return -1;
-
- *refs = 1;
- *child = node->child;
- return 0;
-}
-
-static struct ec_node_type ec_node_sh_lex_type = {
- .name = "sh_lex",
- .parse = ec_node_sh_lex_parse,
- .complete = ec_node_sh_lex_complete,
- .size = sizeof(struct ec_node_sh_lex),
- .free_priv = ec_node_sh_lex_free_priv,
- .get_children_count = ec_node_sh_lex_get_children_count,
- .get_child = ec_node_sh_lex_get_child,
-};
-
-EC_NODE_TYPE_REGISTER(ec_node_sh_lex_type);
-
-struct ec_node *ec_node_sh_lex(const char *id, struct ec_node *child)
-{
- struct ec_node_sh_lex *node = NULL;
-
- if (child == NULL)
- return NULL;
-
- node = (struct ec_node_sh_lex *)ec_node_from_type(&ec_node_sh_lex_type, id);
- if (node == NULL) {
- ec_node_free(child);
- return NULL;
- }
-
- node->child = child;
-
- return &node->gen;
-}
-
-/* LCOV_EXCL_START */
-static int ec_node_sh_lex_testcase(void)
-{
- struct ec_node *node;
- int testres = 0;
-
- node = ec_node_sh_lex(EC_NO_ID,
- EC_NODE_SEQ(EC_NO_ID,
- ec_node_str(EC_NO_ID, "foo"),
- ec_node_option(EC_NO_ID,
- ec_node_str(EC_NO_ID, "toto")
- ),
- ec_node_str(EC_NO_ID, "bar")
- )
- );
- if (node == NULL) {
- EC_LOG(EC_LOG_ERR, "cannot create node\n");
- return -1;
- }
- testres |= EC_TEST_CHECK_PARSE(node, 1, "foo bar");
- testres |= EC_TEST_CHECK_PARSE(node, 1, " foo bar");
- testres |= EC_TEST_CHECK_PARSE(node, 1, " 'foo' \"bar\"");
- testres |= EC_TEST_CHECK_PARSE(node, 1, " 'f'oo 'toto' bar");
- testres |= EC_TEST_CHECK_PARSE(node, -1, " foo toto bar'");
- ec_node_free(node);
-
- /* test completion */
- node = ec_node_sh_lex(EC_NO_ID,
- EC_NODE_SEQ(EC_NO_ID,
- ec_node_str(EC_NO_ID, "foo"),
- ec_node_option(EC_NO_ID,
- ec_node_str(EC_NO_ID, "toto")
- ),
- ec_node_str(EC_NO_ID, "bar"),
- ec_node_str(EC_NO_ID, "titi")
- )
- );
- if (node == NULL) {
- EC_LOG(EC_LOG_ERR, "cannot create node\n");
- return -1;
- }
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "", EC_NODE_ENDLIST,
- "foo", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- " ", EC_NODE_ENDLIST,
- "foo", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "f", EC_NODE_ENDLIST,
- "foo", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo", EC_NODE_ENDLIST,
- "foo", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo ", EC_NODE_ENDLIST,
- "bar", "toto", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo t", EC_NODE_ENDLIST,
- "toto", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo b", EC_NODE_ENDLIST,
- "bar", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo bar", EC_NODE_ENDLIST,
- "bar", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo bar ", EC_NODE_ENDLIST,
- "titi", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo toto bar ", EC_NODE_ENDLIST,
- "titi", EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "x", EC_NODE_ENDLIST,
- EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo barx", EC_NODE_ENDLIST,
- EC_NODE_ENDLIST);
- testres |= EC_TEST_CHECK_COMPLETE(node,
- "foo 'b", EC_NODE_ENDLIST,
- "'bar'", EC_NODE_ENDLIST);
-
- ec_node_free(node);
- return testres;
-}
-/* LCOV_EXCL_STOP */
-
-static struct ec_test ec_node_sh_lex_test = {
- .name = "node_sh_lex",
- .test = ec_node_sh_lex_testcase,
-};
-
-EC_TEST_REGISTER(ec_node_sh_lex_test);
git.droids-corp.org / protos / libecoli.git / blobdiff