src/util/getinfo.c

#ifndef lint
static const char       RCSid[] = "$Id: getinfo.c,v 2.16 2018/03/20 18:18:39 greg Exp $";
#endif
/*
 *  getinfo.c - program to read info. header from file.
 *
 *     1/3/86
 */

#include  <stdio.h>
#include  <string.h>

#include  "platform.h"
#include  "rtprocess.h"
#include  "resolu.h"

#ifdef getc_unlocked            /* avoid nasty file-locking overhead */
#undef getc
#undef getchar
#undef putchar
#define getc            getc_unlocked
#define getchar         getchar_unlocked
#define putchar         putchar_unlocked
#endif

static gethfunc tabstr;
static void getdim(FILE *fp);
static void copycat(void);


static int
tabstr(                         /* put out line followed by tab */
        char  *s,
        void *p
)
{
        while (*s) {
                putchar(*s);
                s++;
        }
        if (*--s == '\n')
                putchar('\t');
        return(0);
}


int
main(
        int  argc,
        char  **argv
)
{
        int  dim = 0;
        FILE  *fp;
        int  i;

        if (argc > 1 && !strcmp(argv[1], "-d")) {
                argc--; argv++;
                dim = 1;
                SET_FILE_BINARY(stdin);
        } else if (argc > 2 && !strcmp(argv[1], "-c")) {
                SET_FILE_BINARY(stdin);
                SET_FILE_BINARY(stdout);
                setvbuf(stdin, NULL, _IONBF, 2);
                if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
                        return 1;
                printargs(argc-2, argv+2, stdout);
                fputc('\n', stdout);
                fflush(stdout);
                execvp(argv[2], argv+2);
                perror(argv[2]);
                return 1;
        } else if (argc > 2 && !strcmp(argv[1], "-a")) {
                SET_FILE_BINARY(stdin);
                SET_FILE_BINARY(stdout);
                if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
                        return 1;
                for (i = 2; i < argc; i++) {
                        int     len = strlen(argv[i]);
                        if (!len) continue;
                        fputs(argv[i], stdout);
                        if (argv[i][len-1] != '\n')
                                fputc('\n', stdout);
                }
                fputc('\n', stdout);
                copycat();
                return 0;
        } else if (argc == 2 && !strcmp(argv[1], "-")) {
                SET_FILE_BINARY(stdin);
                SET_FILE_BINARY(stdout);
                if (getheader(stdin, NULL, NULL) < 0)
                        return 1;
                copycat();
                return 0;
        }
        for (i = 1; i < argc; i++) {
                fputs(argv[i], stdout);
                if ((fp = fopen(argv[i], "r")) == NULL)
                        fputs(": cannot open\n", stdout);
                else {
                        if (dim) {
                                fputs(": ", stdout);
                                getdim(fp);
                        } else {
                                tabstr(":\n", NULL);
                                getheader(fp, tabstr, NULL);
                                fputc('\n', stdout);
                        }
                        fclose(fp);
                }
        }
        if (argc == 1) {
                if (dim) {
                        getdim(stdin);
                } else {
                        if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
                                return 1;
                        fputc('\n', stdout);
                }
        }
        return 0;
}


static void
getdim(                         /* get dimensions from file */
        FILE  *fp
)
{
        int  j;
        int  c;
                                /* skip header */
        if (getheader(fp, NULL, NULL) < 0) {
                fputs("bad header\n", stdout);
                return; 
        }
        switch (c = getc(fp)) {
        case '+':               /* picture */
        case '-':
                do
                        putchar(c);
                while (c != '\n' && (c = getc(fp)) != EOF);
                break;
        case 1:                 /* octree */
                getc(fp);
                j = 0;
                while ((c = getc(fp)) != EOF)
                        if (c == 0) {
                                if (++j >= 4)
                                        break;
                                putchar(' ');
                        } else {
                                putchar(c);
                        }
                putchar('\n');
                break;
        default:                /* ??? */
                fputs("unknown file type\n", stdout);
                break;
        }
}


static void
copycat(void)                   /* copy input to output */
{
        char    buf[8192];
        int     n;

        fflush(stdout);
        while ((n = fread(buf, 1, sizeof(buf), stdin)) > 0)
                if (writebuf(fileno(stdout), buf, n) != n)
                        break;
}
Revision:	2.17
Committed:	Sun Jun 9 18:22:44 2019 UTC (4 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.16:	+14 -8 lines
Log Message:	Added error-checking
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.17	static const char RCSid[] = "$Id: getinfo.c,v 2.16 2018/03/20 18:18:39 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* getinfo.c - program to read info. header from file.
6			*
7			* 1/3/86
8			*/
9
10			#include <stdio.h>
11	schorsch	2.8	#include <string.h>
12	greg	1.1
13	schorsch	2.6	#include "platform.h"
14	greg	2.15	#include "rtprocess.h"
15	schorsch	2.8	#include "resolu.h"
16	greg	2.2
17	greg	2.9	#ifdef getc_unlocked /* avoid nasty file-locking overhead */
18	greg	2.16	#undef getc
19	greg	2.9	#undef getchar
20			#undef putchar
21	greg	2.16	#define getc getc_unlocked
22	greg	2.9	#define getchar getchar_unlocked
23			#define putchar putchar_unlocked
24			#endif
25
26	schorsch	2.8	static gethfunc tabstr;
27	greg	2.10	static void getdim(FILE *fp);
28	schorsch	2.8	static void copycat(void);
29	greg	1.1
30	greg	1.3
31	schorsch	2.8	static int
32			tabstr( /* put out line followed by tab */
33	greg	2.10	char *s,
34	schorsch	2.8	void *p
35			)
36	greg	1.1	{
37			while (*s) {
38			putchar(*s);
39			s++;
40			}
41			if (*--s == '\n')
42			putchar('\t');
43	gwlarson	2.4	return(0);
44	greg	1.1	}
45
46
47	schorsch	2.8	int
48			main(
49			int argc,
50			char **argv
51			)
52	greg	1.1	{
53			int dim = 0;
54			FILE *fp;
55			int i;
56
57			if (argc > 1 && !strcmp(argv[1], "-d")) {
58			argc--; argv++;
59			dim = 1;
60	schorsch	2.6	SET_FILE_BINARY(stdin);
61	greg	2.10	} else if (argc > 2 && !strcmp(argv[1], "-c")) {
62			SET_FILE_BINARY(stdin);
63			SET_FILE_BINARY(stdout);
64	greg	2.12	setvbuf(stdin, NULL, _IONBF, 2);
65	greg	2.17	if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
66			return 1;
67	greg	2.10	printargs(argc-2, argv+2, stdout);
68			fputc('\n', stdout);
69			fflush(stdout);
70			execvp(argv[2], argv+2);
71			perror(argv[2]);
72			return 1;
73	greg	2.14	} else if (argc > 2 && !strcmp(argv[1], "-a")) {
74			SET_FILE_BINARY(stdin);
75			SET_FILE_BINARY(stdout);
76	greg	2.17	if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
77			return 1;
78	greg	2.14	for (i = 2; i < argc; i++) {
79			int len = strlen(argv[i]);
80			if (!len) continue;
81			fputs(argv[i], stdout);
82			if (argv[i][len-1] != '\n')
83			fputc('\n', stdout);
84			}
85			fputc('\n', stdout);
86			copycat();
87			return 0;
88	greg	1.2	} else if (argc == 2 && !strcmp(argv[1], "-")) {
89	schorsch	2.6	SET_FILE_BINARY(stdin);
90			SET_FILE_BINARY(stdout);
91	greg	2.17	if (getheader(stdin, NULL, NULL) < 0)
92			return 1;
93	greg	1.2	copycat();
94	schorsch	2.8	return 0;
95	greg	1.1	}
96			for (i = 1; i < argc; i++) {
97			fputs(argv[i], stdout);
98			if ((fp = fopen(argv[i], "r")) == NULL)
99			fputs(": cannot open\n", stdout);
100			else {
101			if (dim) {
102			fputs(": ", stdout);
103			getdim(fp);
104			} else {
105	schorsch	2.8	tabstr(":\n", NULL);
106	greg	1.3	getheader(fp, tabstr, NULL);
107	greg	2.10	fputc('\n', stdout);
108	greg	1.1	}
109			fclose(fp);
110			}
111			}
112	schorsch	2.7	if (argc == 1) {
113	greg	1.1	if (dim) {
114			getdim(stdin);
115			} else {
116	greg	2.17	if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
117			return 1;
118	greg	2.10	fputc('\n', stdout);
119	greg	1.1	}
120	schorsch	2.7	}
121	schorsch	2.8	return 0;
122	greg	1.1	}
123
124
125	schorsch	2.8	static void
126			getdim( /* get dimensions from file */
127	greg	2.10	FILE *fp
128	schorsch	2.8	)
129	greg	1.1	{
130			int j;
131	greg	2.10	int c;
132	greg	2.17	/* skip header */
133			if (getheader(fp, NULL, NULL) < 0) {
134			fputs("bad header\n", stdout);
135			return;
136			}
137	greg	1.1	switch (c = getc(fp)) {
138			case '+': /* picture */
139			case '-':
140			do
141			putchar(c);
142			while (c != '\n' && (c = getc(fp)) != EOF);
143			break;
144			case 1: /* octree */
145			getc(fp);
146			j = 0;
147			while ((c = getc(fp)) != EOF)
148	greg	2.10	if (c == 0) {
149	greg	1.1	if (++j >= 4)
150			break;
151	greg	2.10	putchar(' ');
152			} else {
153	greg	1.1	putchar(c);
154	greg	2.10	}
155	greg	1.1	putchar('\n');
156			break;
157			default: /* ??? */
158			fputs("unknown file type\n", stdout);
159			break;
160			}
161	greg	1.2	}
162
163
164	schorsch	2.8	static void
165			copycat(void) /* copy input to output */
166	greg	1.2	{
167	greg	2.10	char buf[8192];
168	greg	2.11	int n;
169	greg	2.3
170	greg	2.10	fflush(stdout);
171			while ((n = fread(buf, 1, sizeof(buf), stdin)) > 0)
172	greg	2.15	if (writebuf(fileno(stdout), buf, n) != n)
173	greg	2.10	break;
174	greg	1.1	}