path: root/remotecfg/parse.c (plain)
blob: fdeb31c1e52cffaaf7089906ba090520c75a1379

1	#include <stdio.h>
2	#include <stdlib.h>
3	#include <unistd.h>
4	#include <errno.h>
5	#include <string.h>
6	#include <sys/ioctl.h>
7	#include "common.h"
8
9	/*
10	remove head and tail blank in string
11	*/
12	static void StrTrim(char **s)
13	{
14	int i;
15	int len = strlen(*s);
16
17	for (i = len - 1; i >= 0; i--) {
18	if ((*s)[i] <= ' ')
19	(*s)[i] = 0;
20	else
21	break;
22	}
23
24	while (**s) {
25	if (**s <= ' ')
26	(*s)++;
27	else
28	break;
29	}
30	}
31
32	static void StrLineTrim(char *line, int length)
33	{
34	char *tmp_ptr = line;
35
36	if (line == NULL)
37	return;
38	/*trim comment string*/
39	while (*tmp_ptr && ((tmp_ptr - line) <= length)) {
40	if (*tmp_ptr == '#' || *tmp_ptr == ';') {
41	*tmp_ptr = '\0';
42	break;
43	}
44	tmp_ptr++;
45	}
46	}
47
48	static int StrEmpty(char *str)
49	{
50	int len = strlen(str);
51	return (len == 0);
52	}
53
54	/*
55	Mapcode in file:
56	key_begin
57	0x47 11
58	0x13 2
59	......
60	key_end
61	*/
62	static int GetMapCode(char *line, int *code)
63	{
64	char *p2;
65	char *p1 = line;
66	int ircode;
67
68	/*remove head and tail blank in string*/
69	StrTrim(&line);
70
71	/*get second data point in line*/
72	p2 = strchr(line, ' ');
73	if (p2) {
74	*p2++ = 0;
75	StrTrim(&p2);
76	}
77	if (!p2 || !*p2)
78	return -1;
79	StrTrim(&p1);
80	if (!*p1)
81	return -1;
82	ircode = strtoul(p1, NULL, 0);
83	if (ircode > 0xff) {
84	fprintf(stderr, "invalid ircode: 0x%x\n", ircode);
85	return -1;
86	}
87
88	*code = MAPCODE(ircode, strtoul(p2, NULL, 0));
89	return 0;
90	}
91
92	int GetKeyValue(char *line, char **key, char **value)
93	{
94	char *p1, *p2;
95
96	p1 = line;
97	p2 = strchr(line, '=');
98	if (p2) {
99	*p2++ = 0;
100	StrTrim(&p2);
101	}
102	if (!p2 || !*p2)
103	return -1;
104	StrTrim(&p1);
105	if (!p1 || !*p1)
106	return -1;
107	*value = p2;
108	*key = p1;
109	return 0;
110	}
111
112	static int ReadFile(FILE *fp, pfileHandle handler, void *data)
113	{
114	char *key;
115	char *value;
116	unsigned int mapcode;
117	unsigned char parse_flag = CONFIG_LEVEL;
118	char *line;
119	char *savep;
120	int ret;
121
122	line = (char*)malloc(MAX_LINE_LEN + 1);
123	if (!line) {
124	fprintf(stderr, "malloc line failed\n");
125	return -1;
126	}
127	savep = line;
128	while (fgets(savep, MAX_LINE_LEN, fp)) {
129	line = savep;
130	StrLineTrim(line, MAX_LINE_LEN); /*jump comment*/
131	if (StrEmpty(line))
132	continue;
133	StrTrim(&line);
134	switch (parse_flag) {
135	case CONFIG_LEVEL:
136	if ((strcasecmp(line, "key_begin")) == 0) {
137	parse_flag = KEYMAP_LEVEL;
138	continue;
139	}
140	if (!!GetKeyValue(line, &key, &value))
141	continue;
142	if ((*handler)(key, value, data) < 0) {
143	fprintf(stderr, "invalid line:%s=%s\n",
144	line, value);
145	continue;
146	}
147	break;
148	case KEYMAP_LEVEL:
149	if ((strcasecmp(line, "key_end")) == 0) {
150	parse_flag = CONFIG_LEVEL;
151	continue;
152	}
153	if (!!GetMapCode(line, &mapcode))
154	continue;
155	snprintf(line, 128, "%u", mapcode);
156	if ((*handler)("mapcode", line, data) < 0) {
157	fprintf(stderr, "invalid line:%s=%s\n",
158	"mapcode", line);
159	continue;
160	}
161	break;
162	}
163
164	}
165	if (savep)
166	free(savep);
167	return 0;
168	}
169
170
171	int ParseFile(const char *file, pfileHandle handler, void *data)
172	{
173	FILE *cfgFp;
174
175	if (NULL == (cfgFp = fopen(file, "r"))) {
176	fprintf(stderr, "fopen %s: %s\n", file, strerror(errno));
177	return FAIL;
178	}
179
180	ReadFile(cfgFp, handler, data);
181	fclose(cfgFp);
182	return SUCC;
183	}
184