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Moved functions to parser.c, moved parser to tools

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This commit is contained in:
James Booth
2013-07-11 22:57:35 +01:00
parent 907beb55f6
commit 36265dde2f
6 changed files with 88 additions and 83 deletions
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81
src/tools/autocomplete.c
View File

@@ -24,7 +24,8 @@
#include <stdlib.h>
#include <string.h>
#include "autocomplete.h"
#include "tools/autocomplete.h"
#include "tools/parser.h"
struct autocomplete_t {
GSList *items;
@@ -260,80 +261,6 @@ autocomplete_param_with_ac(char *input, int *size, char *command,
return auto_msg;
}
int
_count_tokens(char *string)
{
int num_tokens = 0;
// if no quotes, use glib
if (g_strrstr(string, "\"") == NULL) {
gchar **tokens = g_strsplit(string, " ", 0);
num_tokens = g_strv_length(tokens);
g_strfreev(tokens);
// else count tokens including quoted
} else {
int length = strlen(string);
int i = 0;
gboolean in_quotes = FALSE;
// include first token
num_tokens++;
for (i = 0; i < length; i++) {
if (string[i] == ' ') {
if (!in_quotes) {
num_tokens++;
}
} else if (string[i] == '"') {
if (in_quotes) {
in_quotes = FALSE;
} else {
in_quotes = TRUE;
}
}
}
}
return num_tokens;
}
char *
_get_start(char *string, int tokens)
{
char *result_str = NULL;
int num_tokens = 0;
int length = strlen(string);
int i = 0;
gboolean in_quotes = FALSE;
GString *result = g_string_new("");
// include first token
num_tokens++;
for (i = 0; i < length; i++) {
if (num_tokens < tokens) {
g_string_append_c(result, string[i]);
}
if (string[i] == ' ') {
if (!in_quotes) {
num_tokens++;
}
} else if (string[i] == '"') {
if (in_quotes) {
in_quotes = FALSE;
} else {
in_quotes = TRUE;
}
}
}
result_str = result->str;
g_string_free(result, FALSE);
return result_str;
}
char *
autocomplete_param_no_with_func(char *input, int *size, char *command,
int arg_number, autocomplete_func func)
@@ -353,11 +280,11 @@ autocomplete_param_no_with_func(char *input, int *size, char *command,
g_strstrip(inp_cpy);
// count tokens properly
int num_tokens = _count_tokens(inp_cpy);
int num_tokens = count_tokens(inp_cpy);
// if correct number of tokens, then candidate for autocompletion of last param
if (num_tokens == arg_number) {
gchar *start_str = _get_start(inp_cpy, arg_number);
gchar *start_str = get_start(inp_cpy, arg_number);
gchar *comp_str = g_strdup(&inp_cpy[strlen(start_str)]);
// autocomplete param

349
src/tools/parser.c Normal file
View File

@@ -0,0 +1,349 @@
/*
* parser.c
*
* Copyright (C) 2012, 2013 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity 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.
*
* Profanity 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 Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdlib.h>
#include <string.h>
#include <glib.h>
/*
* Take a full line of input and return an array of strings representing
* the arguments of a command.
* If the number of arguments found is less than min, or more than max
* NULL is returned.
*
* inp - The line of input
* min - The minimum allowed number of arguments
* max - The maxmimum allowed number of arguments
*
* Returns - An NULL terminated array of strings representing the aguments
* of the command, or NULL if the validation fails.
*
* E.g. the following input line:
*
* /cmd arg1 arg2
*
* Will return a pointer to the following array:
*
* { "arg1", "arg2", NULL }
*
*/
gchar **
parse_args(const char * const inp, int min, int max)
{
if (inp == NULL) {
return NULL;
}
// copy and strip input of leading/trailing whitepsace
char *copy = strdup(inp);
g_strstrip(copy);
int inp_size = strlen(copy);
gboolean in_token = FALSE;
gboolean in_quotes = FALSE;
char *token_start = &copy[0];
int token_size = 0;
GSList *tokens = NULL;
// add tokens to GSList
int i;
for (i = 0; i <= inp_size; i++) {
if (!in_token) {
if (copy[i] == ' ') {
continue;
} else {
in_token = TRUE;
if (copy[i] == '"') {
in_quotes = TRUE;
i++;
}
token_start = &copy[i];
token_size++;
}
} else {
if (in_quotes) {
if ((copy[i] == '\0') || (copy[i] == '"')) {
tokens = g_slist_append(tokens, g_strndup(token_start,
token_size));
token_size = 0;
in_token = FALSE;
in_quotes = FALSE;
} else {
token_size++;
}
} else {
if (copy[i] == ' ' || copy[i] == '\0') {
tokens = g_slist_append(tokens, g_strndup(token_start,
token_size));
token_size = 0;
in_token = FALSE;
} else {
token_size++;
}
}
}
}
int num = g_slist_length(tokens) - 1;
// if num args not valid return NULL
if ((num < min) || (num > max)) {
g_slist_free_full(tokens, free);
g_free(copy);
return NULL;
// if min allowed is 0 and 0 found, return empty char* array
} else if (min == 0 && num == 0) {
g_slist_free_full(tokens, free);
gchar **args = malloc((num + 1) * sizeof(*args));
args[0] = NULL;
g_free(copy);
return args;
// otherwise return args array
} else {
gchar **args = malloc((num + 1) * sizeof(*args));
GSList *token = tokens;
token = g_slist_next(token);
int arg_count = 0;
while (token != NULL) {
args[arg_count++] = strdup(token->data);
token = g_slist_next(token);
}
args[arg_count] = NULL;
g_slist_free_full(tokens, free);
g_free(copy);
return args;
}
}
/*
* Take a full line of input and return an array of strings representing
* the arguments of a command. This function handles when the last parameter
* to the command is free text e.g.
*
* /msg user@host here is a message
*
* If the number of arguments found is less than min, or more than max
* NULL is returned.
*
* inp - The line of input
* min - The minimum allowed number of arguments
* max - The maxmimum allowed number of arguments
*
* Returns - An NULL terminated array of strings representing the aguments
* of the command, or NULL if the validation fails.
*
* E.g. the following input line:
*
* /cmd arg1 arg2 some free text
*
* Will return a pointer to the following array:
*
* { "arg1", "arg2", "some free text", NULL }
*
*/
gchar **
parse_args_with_freetext(const char * const inp, int min, int max)
{
if (inp == NULL) {
return NULL;
}
// copy and strip input of leading/trailing whitepsace
char *copy = strdup(inp);
g_strstrip(copy);
int inp_size = strlen(copy);
gboolean in_token = FALSE;
gboolean in_freetext = FALSE;
gboolean in_quotes = FALSE;
char *token_start = &copy[0];
int token_size = 0;
int num_tokens = 0;
GSList *tokens = NULL;
// add tokens to GSList
int i;
for (i = 0; i <= inp_size; i++) {
if (!in_token) {
if (copy[i] == ' ') {
continue;
} else {
in_token = TRUE;
num_tokens++;
if (num_tokens == max + 1) {
in_freetext = TRUE;
} else if (copy[i] == '"') {
in_quotes = TRUE;
i++;
}
if (copy[i] == '"') {
token_start = &copy[i+1];
} else {
token_start = &copy[i];
}
if (copy[i] != '"') {
token_size++;
}
}
} else {
if (in_quotes) {
if ((copy[i] == '\0') || (copy[i] == '"')) {
tokens = g_slist_append(tokens, g_strndup(token_start,
token_size));
token_size = 0;
in_token = FALSE;
in_quotes = FALSE;
} else {
if (copy[i] != '"') {
token_size++;
}
}
} else {
if ((!in_freetext && copy[i] == ' ') || copy[i] == '\0') {
tokens = g_slist_append(tokens, g_strndup(token_start,
token_size));
token_size = 0;
in_token = FALSE;
} else {
if (copy[i] != '"') {
token_size++;
}
}
}
}
}
int num = g_slist_length(tokens) - 1;
// if num args not valid return NULL
if ((num < min) || (num > max)) {
g_slist_free_full(tokens, free);
free(copy);
return NULL;
// if min allowed is 0 and 0 found, return empty char* array
} else if (min == 0 && num == 0) {
gchar **args = malloc((num + 1) * sizeof(*args));
args[0] = NULL;
return args;
// otherwise return args array
} else {
gchar **args = malloc((num + 1) * sizeof(*args));
GSList *token = tokens;
token = g_slist_next(token);
int arg_count = 0;
while (token != NULL) {
args[arg_count++] = strdup(token->data);
token = g_slist_next(token);
}
args[arg_count] = NULL;
g_slist_free_full(tokens, free);
free(copy);
return args;
}
}
int
count_tokens(char *string)
{
int num_tokens = 0;
// if no quotes, use glib
if (g_strrstr(string, "\"") == NULL) {
gchar **tokens = g_strsplit(string, " ", 0);
num_tokens = g_strv_length(tokens);
g_strfreev(tokens);
// else count tokens including quoted
} else {
int length = strlen(string);
int i = 0;
gboolean in_quotes = FALSE;
// include first token
num_tokens++;
for (i = 0; i < length; i++) {
if (string[i] == ' ') {
if (!in_quotes) {
num_tokens++;
}
} else if (string[i] == '"') {
if (in_quotes) {
in_quotes = FALSE;
} else {
in_quotes = TRUE;
}
}
}
}
return num_tokens;
}
char *
get_start(char *string, int tokens)
{
char *result_str = NULL;
int num_tokens = 0;
int length = strlen(string);
int i = 0;
gboolean in_quotes = FALSE;
GString *result = g_string_new("");
// include first token
num_tokens++;
for (i = 0; i < length; i++) {
if (num_tokens < tokens) {
g_string_append_c(result, string[i]);
}
if (string[i] == ' ') {
if (!in_quotes) {
num_tokens++;
}
} else if (string[i] == '"') {
if (in_quotes) {
in_quotes = FALSE;
} else {
in_quotes = TRUE;
}
}
}
result_str = result->str;
g_string_free(result, FALSE);
return result_str;
}

33
src/tools/parser.h Normal file
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@@ -0,0 +1,33 @@
/*
* parser.h
*
* Copyright (C) 2012, 2013 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity 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.
*
* Profanity 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 Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef PARSER_H
#define PARSER_H
#include <glib.h>
gchar** parse_args(const char * const inp, int min, int max);
gchar** parse_args_with_freetext(const char * const inp, int min, int max);
int count_tokens(char *string);
char* get_start(char *string, int tokens);
#endif