src/util/getinfo.c

#ifndef lint
static const char       RCSid[] = "$Id: getinfo.c,v 2.17 2019/06/09 18:22:44 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;
        }
#ifdef getc_unlocked                            /* avoid lock/unlock overhead */
        flockfile(stdin);
#endif
        SET_FILE_BINARY(stdin);
        if (argc > 2 && !strcmp(argv[1], "-c")) {
                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);
                if (dim) {                      /* copy resolution string? */
                        RESOLU  rs;
                        if (!fgetsresolu(&rs, stdin)) {
                                fputs("No resolution string\n", stderr);
                                return 1;
                        }
                        fputsresolu(&rs, stdout);
                }
                fflush(stdout);
                execvp(argv[2], argv+2);
                perror(argv[2]);
                return 1;
        } else if (argc > 2 && !strcmp(argv[1], "-a")) {
                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(stdout);
                if (getheader(stdin, NULL, NULL) < 0)
                        return 1;
                if (dim) {                      /* skip resolution string? */
                        RESOLU  rs;
                        if (!fgetsresolu(&rs, stdin)) {
                                fputs("No resolution string\n", stderr);
                                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:	2.18
Committed:	Sat Jul 6 14:08:07 2019 UTC (6 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.17:	+22 -6 lines
Log Message:	Made getinfo -d option useful for header-skip ('-') and command ('-c') options
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.18	static const char RCSid[] = "$Id: getinfo.c,v 2.17 2019/06/09 18:22:44 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	greg	2.18	}
61			#ifdef getc_unlocked /* avoid lock/unlock overhead */
62			flockfile(stdin);
63			#endif
64			SET_FILE_BINARY(stdin);
65			if (argc > 2 && !strcmp(argv[1], "-c")) {
66	greg	2.10	SET_FILE_BINARY(stdout);
67	greg	2.12	setvbuf(stdin, NULL, _IONBF, 2);
68	greg	2.17	if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
69			return 1;
70	greg	2.10	printargs(argc-2, argv+2, stdout);
71			fputc('\n', stdout);
72	greg	2.18	if (dim) { /* copy resolution string? */
73			RESOLU rs;
74			if (!fgetsresolu(&rs, stdin)) {
75			fputs("No resolution string\n", stderr);
76			return 1;
77			}
78			fputsresolu(&rs, stdout);
79			}
80	greg	2.10	fflush(stdout);
81			execvp(argv[2], argv+2);
82			perror(argv[2]);
83			return 1;
84	greg	2.14	} else if (argc > 2 && !strcmp(argv[1], "-a")) {
85			SET_FILE_BINARY(stdout);
86	greg	2.17	if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
87			return 1;
88	greg	2.14	for (i = 2; i < argc; i++) {
89			int len = strlen(argv[i]);
90			if (!len) continue;
91			fputs(argv[i], stdout);
92			if (argv[i][len-1] != '\n')
93			fputc('\n', stdout);
94			}
95			fputc('\n', stdout);
96			copycat();
97			return 0;
98	greg	1.2	} else if (argc == 2 && !strcmp(argv[1], "-")) {
99	schorsch	2.6	SET_FILE_BINARY(stdout);
100	greg	2.17	if (getheader(stdin, NULL, NULL) < 0)
101			return 1;
102	greg	2.18	if (dim) { /* skip resolution string? */
103			RESOLU rs;
104			if (!fgetsresolu(&rs, stdin)) {
105			fputs("No resolution string\n", stderr);
106			return 1;
107			}
108			}
109	greg	1.2	copycat();
110	schorsch	2.8	return 0;
111	greg	1.1	}
112			for (i = 1; i < argc; i++) {
113			fputs(argv[i], stdout);
114			if ((fp = fopen(argv[i], "r")) == NULL)
115			fputs(": cannot open\n", stdout);
116			else {
117			if (dim) {
118			fputs(": ", stdout);
119			getdim(fp);
120			} else {
121	schorsch	2.8	tabstr(":\n", NULL);
122	greg	1.3	getheader(fp, tabstr, NULL);
123	greg	2.10	fputc('\n', stdout);
124	greg	1.1	}
125			fclose(fp);
126			}
127			}
128	schorsch	2.7	if (argc == 1) {
129	greg	1.1	if (dim) {
130			getdim(stdin);
131			} else {
132	greg	2.17	if (getheader(stdin, (gethfunc *)fputs, stdout) < 0)
133			return 1;
134	greg	2.10	fputc('\n', stdout);
135	greg	1.1	}
136	schorsch	2.7	}
137	schorsch	2.8	return 0;
138	greg	1.1	}
139
140
141	schorsch	2.8	static void
142			getdim( /* get dimensions from file */
143	greg	2.10	FILE *fp
144	schorsch	2.8	)
145	greg	1.1	{
146			int j;
147	greg	2.10	int c;
148	greg	2.17	/* skip header */
149			if (getheader(fp, NULL, NULL) < 0) {
150			fputs("bad header\n", stdout);
151			return;
152			}
153	greg	1.1	switch (c = getc(fp)) {
154			case '+': /* picture */
155			case '-':
156			do
157			putchar(c);
158			while (c != '\n' && (c = getc(fp)) != EOF);
159			break;
160			case 1: /* octree */
161			getc(fp);
162			j = 0;
163			while ((c = getc(fp)) != EOF)
164	greg	2.10	if (c == 0) {
165	greg	1.1	if (++j >= 4)
166			break;
167	greg	2.10	putchar(' ');
168			} else {
169	greg	1.1	putchar(c);
170	greg	2.10	}
171	greg	1.1	putchar('\n');
172			break;
173			default: /* ??? */
174			fputs("unknown file type\n", stdout);
175			break;
176			}
177	greg	1.2	}
178
179
180	schorsch	2.8	static void
181			copycat(void) /* copy input to output */
182	greg	1.2	{
183	greg	2.10	char buf[8192];
184	greg	2.11	int n;
185	greg	2.3
186	greg	2.10	fflush(stdout);
187			while ((n = fread(buf, 1, sizeof(buf), stdin)) > 0)
188	greg	2.15	if (writebuf(fileno(stdout), buf, n) != n)
189	greg	2.10	break;
190	greg	1.1	}