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1.1 root 1: /* config.c: this is the code for opening the config files;
2: * printing a screen of existing ports, systems or
3: * dialers; viewing or deleting an existing entry.
4: */
5:
6: #include <stdio.h>
7: #include <curses.h>
8: #include <fcntl.h>
9: #include "uuinstall.h"
10:
11: char names[MAXENTRIES][15]; /* array of port names read */
12:
13: /* open_config_file(): does just that, opens a configuration file */
14:
15: open_config_file()
16: {
17:
18: FILE * configfile;
19:
20: if(portflag){
21: if ( (configfile = fopen(PORTFILE,"r")) == NULL){
22: printf("Error opening %s.\n",PORTFILE);
23: exit_program(-1);
24: }
25: }
26:
27: if(sysflag){
28: if ( (configfile = fopen(SYSFILE,"r")) == NULL){
29: printf("Error opening %s.\n",SYSFILE);
30: exit_program(-1);
31: }
32: }
33:
34: if(dialflag){
35: if ( (configfile = fopen(DIALFILE,"r")) == NULL){
36: printf("Error opening %s.\n",DIALFILE);
37: exit_program(-1);
38: }
39: }
40:
41: /* file exists, but is empty */
42: if( -1 == read_entries(configfile)){
43: fclose(configfile);
44: return;
45: }
46:
47: fclose(configfile);
48: print_selections();
49:
50: lite(selwin,0,1,1); /* highlight our first record */
51: prompt();
52: wrefresh(selwin);
53:
54: }
55:
56:
57: /* read the information from the specified file. We want to keep track of the
58: * port, system or dialer name we have read, the line we began reading it
59: * on and the total number of entries read;
60: */
61:
62:
63: read_entries(configfile)
64: FILE * configfile; /* pointer to our configuration file */
65: {
66:
67: int x = 0; /* counter of lines read */
68: int size = 0; /* offset where we will find the
69: * port name, system name or dialer
70: * name on the first line of a port,
71: * dial or sys entry in a config file.
72: */
73: char buffer[256];
74: char lookfor[8];
75:
76: if(dialflag){
77: strcpy(lookfor,"dialer");
78: size = 7;
79: }
80: if(sysflag){
81: strcpy(lookfor,"system");
82: size = 7;
83: }
84: if(portflag){
85: strcpy(lookfor,"port");
86: size = 5;
87: }
88:
89: total_entries_found = 0; /* total number of port entries found */
90:
91: while(fgets(buffer,sizeof(buffer) -1, configfile) != NULL){
92: x++;
93:
94: /* found first line of a configuration entry, copy name and
95: * the line number we found it on.
96: */
97:
98: if(strstr(buffer,lookfor)){
99: /* there's a newline here, get rid of it */
100: buffer[strlen(buffer) -1] = '\0';
101: /* if someone has editted the file to comment out an entry, we still
102: * want to display it, but must accomodate the new offset within the
103: * string of the actual name we want caused by the addition of a
104: * '#' character.
105: */
106: while(isspace( *(buffer + size) ) ){
107: size++;
108: }
109:
110: strcpy(names[total_entries_found],buffer + size);
111: startpos[total_entries_found] = x;
112: total_entries_found++;
113:
114: if (total_entries_found == MAXENTRIES){
115: return;
116: }
117: /* printf("Found port %s on line %d\n",names[total_entries_found -1],x); */
118: }
119: }
120:
121: /* if the file exists but is empty, return -1 to the calling process */
122: if(x == 0){
123: return(-1);
124: }
125: }
126:
127:
128: /* print the entries we found to the selection window */
129:
130: print_selections()
131: {
132: int r,c,z; /* counters */
133:
134: z = 0;
135:
136: for(r = 0; r < 20 ; r++){ /* 20 is the max # lines we have */
137: if (z == total_entries_found) /* if we have no more ports, then abort */
138: break;
139:
140: /* increment our column by 15 positions. This will cause
141: * the port names to be printed to line up properly.
142: */
143:
144: for(c = 1; c < 75 ; c+=15){
145: mvwaddstr(selwin,r,c, names[z]);
146: z++;
147: if (z == total_entries_found) /* break if out of ports */
148: break;
149: }
150: }
151: wmove(selwin, 0,1); /* put our cursor at the first entry on the win */
152:
153: return;
154:
155: }
156:
157:
158: /* prompt(): print a message telling the user what to do */
159:
160: prompt()
161: {
162: wclear(promptwin);
163: wmove(promptwin,0,0);
164: wprintw(promptwin,"Highlite the entry you wish to work");
165: wmove(promptwin,1,0);
166: wprintw(promptwin,"with by using arrow keys or the vi");
167: wmove(promptwin,2,0);
168: wprintw(promptwin,"keys h,j,k &l. <RETURN> selects entry.");
169: wmove(promptwin,3,0);
170: wprintw(promptwin,"To exit, press 'q'.");
171: wrefresh(promptwin);
172: }
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