dockapps/wmcliphist/rcconfig.c

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10 KiB
C
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#include "wmcliphist.h"
#include <sys/stat.h>
#define RC_BUF_SIZE 256
/* automat state */
typedef enum {
STATE_BEGINING,
STATE_COMMENT,
STATE_DIRECTIVE,
STATE_VALUE,
STATE_EXPRESSION_START,
STATE_EXPRESSION,
STATE_EXPRESSION_END,
STATE_ACTION,
STATE_COMMAND
} STATE;
GList *action_list = NULL;
/* add character to buffer */
#define add_to_buff(buf, pos, chr) do { \
buf[pos++] = chr; \
buf[pos] = '\0'; \
if (pos + 1 == RC_BUF_SIZE) \
error = 7; \
} while (0)
#define ismywhite(c) (c == '\t' || c == ' ')
/*
* returns config/data file name in user's home
*/
char *
rcconfig_get_name(char *append)
{
static gchar fname[PATH_MAX];
const gchar *home;
begin_func("rcconfig_get_name");
if (!(home = g_getenv("HOME")))
return_val(NULL);
memset(fname, 0, PATH_MAX);
snprintf(fname, PATH_MAX, "%s/.wmcliphist%s", home, append);
return_val(fname);
}
/*
* appends parsed action to action list
*/
int
action_append(char *expr_buf, char *action_buf, char *cmd_buf)
{
ACTION *action;
begin_func("action_append");
action = g_new0(ACTION, 1);
if (regcomp(&action->expression, expr_buf,
REG_EXTENDED|REG_ICASE|REG_NOSUB) != 0) {
g_free(action);
return_val(-101);
}
if (strcmp(action_buf, "exec") == 0)
action->action = ACT_EXEC;
else if (strcmp(action_buf, "submenu") == 0)
action->action = ACT_SUBMENU;
else if (strcmp(action_buf, "ignore") == 0)
action->action = ACT_IGNORE;
else {
g_free(action);
return_val(-102);
}
action->command = g_strdup(cmd_buf);
action_list = g_list_append(action_list, action);
return_val(0);
}
/*
* read and parse rcconfig
*/
int
rcconfig_get(char *fname)
{
int f_rc;
char tmp[1024], c;
int byte_cnt;
STATE state = STATE_BEGINING;
char direc_buf[RC_BUF_SIZE],
expr_buf[RC_BUF_SIZE],
action_buf[RC_BUF_SIZE],
cmd_buf[RC_BUF_SIZE];
int buf_index = 0;
int error = 0, eof = 0;
int i;
int line = 0;
int res;
begin_func("rcconfig_get");
close(open(fname, O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH));
if ((f_rc = open(fname, O_RDONLY)) < 0) {
fprintf(stderr, ".wmcliphistrc not found\n");
return_val(1);
}
i = byte_cnt = 0;
while (1) {
if (i == byte_cnt) {
byte_cnt = read(f_rc, tmp, 1024);
if (byte_cnt == -1) {
fprintf(stderr, "cannot read .wmcliphistrc\n");
break;
} else if (byte_cnt < 1024) {
tmp[byte_cnt++] = 0;
eof = 1;
}
i = 0;
}
c = tmp[i++];
switch (state) {
case STATE_BEGINING:
line++;
if (isalnum(c)) {
state = STATE_DIRECTIVE;
buf_index = 0;
add_to_buff(direc_buf, buf_index, c);
} else if (c == '#')
state = STATE_COMMENT;
else if (ismywhite(c))
line--;
else if (c == '\n')
state = STATE_BEGINING;
else
error = 1;
break;
case STATE_COMMENT:
if (c == '\n' || c == '\0')
state = STATE_BEGINING;
break;
case STATE_DIRECTIVE:
if (ismywhite(c)) {
if (strcmp(direc_buf, "action") == 0) {
state = STATE_EXPRESSION_START;
buf_index = 0;
} else if (strcmp(direc_buf, "menukey") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "prev_item_key") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "exec_item_key") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "keep") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "lcolor") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "clipboard") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "autosave") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf,
"confirm_exec") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "exec_immediately") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "exec_middleclick") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "exec_hotkey") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else if (strcmp(direc_buf, "auto_take_up") == 0) {
state = STATE_VALUE;
buf_index = 0;
} else {
error = 8;
}
} else if (isalpha(c) || c == '_') {
add_to_buff(direc_buf, buf_index, c);
} else {
error = 1;
}
break;
case STATE_VALUE:
if (c == '\n' || ismywhite(c)) {
if (strcmp(direc_buf, "menukey") == 0) {
memset(menukey_str, 0, 32);
strncpy(menukey_str,
expr_buf, 31);
} else if (strcmp(direc_buf, "prev_item_key") == 0) {
memset(prev_item_key_str, 0, 32);
strncpy(prev_item_key_str,
expr_buf, 31);
} else if (strcmp(direc_buf, "exec_item_key") == 0) {
memset(exec_item_key_str, 0, 32);
strncpy(exec_item_key_str,
expr_buf, 31);
} else if (strcmp(direc_buf, "keep") == 0) {
num_items_to_keep =
atoi(expr_buf);
} else if (strcmp(direc_buf, "lcolor")
== 0) {
memset(locked_color_str, 0, 32);
strncpy(locked_color_str,
expr_buf, 31);
} else if (strcmp(direc_buf, "clipboard")
== 0) {
memset(clipboard_str, 0, 32);
strncpy(clipboard_str,
expr_buf, 31);
} else if (strcmp(direc_buf, "autosave") == 0) {
autosave_period =
atoi(expr_buf);
} else if (strcmp(direc_buf,
"confirm_exec") == 0) {
if (strcasecmp(expr_buf, "yes") == 0) {
confirm_exec = 1;
}
} else if (strcmp(direc_buf, "exec_immediately") == 0) {
if (strcasecmp(expr_buf, "no") == 0) {
exec_immediately= 0;
}
} else if (strcmp(direc_buf, "exec_middleclick") == 0) {
if (strcasecmp(expr_buf, "no") == 0) {
exec_middleclick = 0;
}
} else if (strcmp(direc_buf, "exec_hotkey") == 0) {
if (strcasecmp(expr_buf, "no") == 0) {
exec_hotkey = 0;
}
} else if (strcmp(direc_buf, "auto_take_up") == 0) {
if (strcasecmp(expr_buf, "no") == 0) {
auto_take_up = 0;
}
} else
error = 1;
} else if (isgraph(c))
add_to_buff(expr_buf, buf_index, c);
else
error = 2;
if (error == 0) {
if (c == '\n' || c == '\0') {
buf_index = 0;
state = STATE_BEGINING;
} else if (ismywhite(c)) {
buf_index = 0;
state = STATE_COMMENT;
}
}
break;
case STATE_EXPRESSION_START:
if (c == '"')
state = STATE_EXPRESSION;
else
error = 1;
break;
case STATE_EXPRESSION:
if (c == '"')
state = STATE_EXPRESSION_END;
else if (c == '\n')
error = 1;
else
add_to_buff(expr_buf, buf_index, c);
break;
case STATE_EXPRESSION_END:
if (c != ' ' && c != '\t')
error = 1;
if (strcmp(direc_buf, "action") == 0) {
state = STATE_ACTION;
buf_index = 0;
} else
error = 1;
break;
case STATE_ACTION:
if (c == ' ' || c == '\t') {
state = STATE_COMMAND;
buf_index = 0;
} else if (c == '\0' || c == '\n') {
if (strcmp(action_buf, "ignore") == 0) {
state = STATE_BEGINING;
buf_index = 0;
*cmd_buf = '\0';
res = action_append(
expr_buf,
action_buf,
cmd_buf);
if (res < 0)
error = abs(res);
} else
error = 1;
} else if (isalpha(c))
add_to_buff(action_buf, buf_index, c);
else
error = 1;
break;
case STATE_COMMAND:
if (c == '\n' || c == '\0') {
state = STATE_BEGINING;
buf_index = 0;
res = action_append(
expr_buf,
action_buf,
cmd_buf);
if (res < 0)
error = abs(res);
} else
add_to_buff(cmd_buf, buf_index, c);
break;
}
if (!error && (!eof || i < byte_cnt))
continue;
switch (state) {
case STATE_DIRECTIVE:
if (error == 7)
fprintf(stderr, "Directive is too long "
"(line %d)\n", line);
else if (error == 8)
fprintf(stderr, "Unknown directive "
"(line %d)\n", line);
else
fprintf(stderr, "Only letters are "
"allowed in directive "
"name (line %d)\n",
line);
break;
case STATE_EXPRESSION_START:
case STATE_EXPRESSION:
if (error == 7)
fprintf(stderr, "Expression is too long "
"(line %d)\n", line);
else
fprintf(stderr, "Expression must be "
"enclosed with quotes "
"\" (line %d)\n", line);
break;
case STATE_EXPRESSION_END:
fprintf(stderr, "One space/tab and "
"action must follow "
"each expression"
" (line %d)\n", line);
break;
case STATE_ACTION:
if (error == 1)
fprintf(stderr, "Only letters are "
"allowed in action "
"name (line %d)\n",
line);
else if (error == 101)
fprintf(stderr, "Invalid expression "
"(line %d)\n", line);
else if (error == 7)
fprintf(stderr, "Action is too long "
"(line %d)\n", line);
else
fprintf(stderr, "Invalid action "
"(line %d)\n", line);
break;
case STATE_VALUE:
if (error == 1)
fprintf(stderr, "Invalid directive "
"(line %d)\n", line);
else if (error == 7)
fprintf(stderr, "Value is too long "
"(line %d)\n", line);
else
fprintf(stderr, "Invalid value "
"(line %d)\n", line);
break;
case STATE_COMMAND:
if (error == 101)
fprintf(stderr, "Invalid expression "
"(line %d)\n", line);
else if (error == 7)
fprintf(stderr, "Command is too long "
"(line %d)\n", line);
else
fprintf(stderr, "Invalid action "
"(line %d)\n", line);
break;
case STATE_COMMENT:
if (!eof)
fprintf(stderr, "Unknown error "
"(line %d)\n", line);
else
error = 0;
break;
case STATE_BEGINING:
/* everything is OK */
error = 0;
break;
}
break;
}
close(f_rc);
return_val(error);
}
/*
* free rcconfig data
*/
void
rcconfig_free()
{
GList *list_node;
begin_func("rcconfig_free");
list_node = action_list;
while (list_node) {
ACTION *action = list_node->data;
g_free(action->command);
regfree(&action->expression);
g_free(action);
list_node = list_node->next;
}
g_list_free(action_list);
return_void();
}