src/util/rcollate.c

#ifndef lint
static const char RCSid[] = "$Id: rcollate.c,v 2.21 2015/06/16 20:35:56 greg Exp $";
#endif
/*
 * Utility to re-order records in a binary or ASCII data file (matrix)
 */

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "platform.h"
#include "rtio.h"
#include "resolu.h"
#ifdef _WIN32
#undef ftello
#define ftello  ftell
#undef ssize_t
#define ssize_t size_t
#else
#include <sys/mman.h>
#endif

typedef struct {
        void    *base;          /* pointer to base memory */
        size_t  len;            /* allocated memory length */
        int     mapped;         /* memory-mapped file? */
} MEMLOAD;              /* file loaded/mapped into memory */

typedef struct {
        int     nw_rec;         /* number of words per record */
        int     nrecs;          /* number of records we found */
        char    *rec[1];        /* record array (extends struct) */
} RECINDEX;

int             warnings = 1;   /* report warnings? */

/* free loaded file */
static void
free_load(MEMLOAD *mp)
{
        if (mp == NULL || (mp->base == NULL) | (mp->len <= 0))
                return;
#ifdef MAP_FILE
        if (mp->mapped)
                munmap(mp->base, mp->len);
        else
#endif
                free(mp->base);
        mp->base = NULL;
        mp->len = 0;
}

/* load memory from an input stream, starting from current position */
static int
load_stream(MEMLOAD *mp, FILE *fp)
{
        size_t  alloced = 0;
        char    buf[8192];
        size_t  nr;

        if (mp == NULL)
                return(-1);
        mp->base = NULL;
        mp->len = 0;
        mp->mapped = 0;
        if (fp == NULL)
                return(-1);
        while ((nr = fread(buf, 1, sizeof(buf), fp)) > 0) {
                if (!alloced)
                        mp->base = malloc(alloced = nr);
                else if (mp->len+nr > alloced)
                        mp->base = realloc(mp->base,
                                alloced = alloced*(2+(nr==sizeof(buf)))/2+nr);
                if (mp->base == NULL)
                        return(-1);
                memcpy((char *)mp->base + mp->len, buf, nr);
                mp->len += nr;
        }
        if (ferror(fp)) {
                free_load(mp);
                return(-1);
        }
        if (alloced > mp->len*5/4)      /* don't waste too much space */
                mp->base = realloc(mp->base, mp->len);
        return(mp->len > 0);
}

/* load a file into memory */
static int
load_file(MEMLOAD *mp, FILE *fp)
{
        int     fd;
        off_t   skip, flen;

#ifdef _WIN32                           /* too difficult to fix this */
        return load_stream(mp, fp);
#endif
        if (mp == NULL)
                return(-1);
        mp->base = NULL;
        mp->len = 0;
        mp->mapped = 0;
        if (fp == NULL)
                return(-1);
        fd = fileno(fp);
        skip = ftello(fp);
        flen = lseek(fd, 0, SEEK_END);
        if (flen <= skip)
                return((int)(flen - skip));
        mp->len = (size_t)(flen - skip);
#ifdef MAP_FILE
        if (mp->len > 1L<<20) {         /* map file if > 1 MByte */
                mp->base = mmap(NULL, mp->len, PROT_READ, MAP_PRIVATE, fd, skip);
                if (mp->base != MAP_FAILED) {
                        mp->mapped = 1;
                        return(1);      /* mmap() success */
                }
                mp->base = NULL;        /* fall back to reading it in... */
        }
#endif
        if (lseek(fd, skip, SEEK_SET) != skip ||
                        (mp->base = malloc(mp->len)) == NULL) {
                mp->len = 0;
                return(-1);
        }
        if (read(fd, (char *)mp->base, mp->len) != mp->len) {
                free_load(mp);
                return(-1);
        }
        return(1);
}

/* free a record index */
#define free_records(rp)        free(rp)

/* compute record index */
static RECINDEX *
index_records(const MEMLOAD *mp, int nw_rec)
{
        RECINDEX        *rp;
        char            *cp, *mend;
        int             n;

        if (mp == NULL || (mp->base == NULL) | (mp->len <= 0))
                return(NULL);
        if (nw_rec <= 0)
                return(NULL);
        rp = (RECINDEX *)malloc(sizeof(RECINDEX) + mp->len/(2*nw_rec)*sizeof(char *));
        if (rp == NULL)
                return(NULL);
        rp->nw_rec = nw_rec;
        rp->nrecs = 0;
        cp = (char *)mp->base;
        mend = cp + mp->len;
        for ( ; ; ) {                           /* whitespace-separated words */
                while (cp < mend && !*cp | isspace(*cp))
                        ++cp;
                if (cp >= mend)
                        break;
                rp->rec[rp->nrecs++] = cp;      /* point to first non-white */
                n = rp->nw_rec;
                while (++cp < mend)             /* find end of record */
                        if (!*cp | isspace(*cp)) {
                                if (--n <= 0)
                                        break;  /* got requisite # words */
                                do {            /* else find next word */
                                        if (*cp == '\n') {
                                                fprintf(stderr,
                                                "Unexpected EOL in record!\n");
                                                free_records(rp);
                                                return(NULL);
                                        }
                                        if (++cp >= mend)
                                                break;
                                } while (!*cp | isspace(*cp));
                        }
        }
        rp->rec[rp->nrecs] = mend;              /* reallocate to save space */
        rp = (RECINDEX *)realloc(rp,
                        sizeof(RECINDEX) + rp->nrecs*sizeof(char *));
        return(rp);
}

/* count number of columns based on first EOL */
static int
count_columns(const RECINDEX *rp)
{
        char    *cp = rp->rec[0];
        char    *mend = rp->rec[rp->nrecs];
        int     i;

        while (*cp != '\n')
                if (++cp >= mend)
                        return(0);
        for (i = 0; i < rp->nrecs; i++)
                if (rp->rec[i] >= cp)
                        break;
        return(i);
}

/* copy nth record from index to stdout */
static int
print_record(const RECINDEX *rp, int n)
{
        int     words2go = rp->nw_rec;
        char    *scp;

        if ((n < 0) | (n >= rp->nrecs))
                return(0);
        scp = rp->rec[n];
        do {
                putc(*scp++, stdout);
                if (!*scp | isspace(*scp)) {
                        if (--words2go <= 0)
                                break;
                        putc(' ', stdout);      /* single space btwn. words */
                        do
                                if (++scp >= rp->rec[n+1])
                                        break;
                        while (!*scp | isspace(*scp));
                }
        } while (scp < rp->rec[n+1]);
                                                /* caller adds record sep. */
        return(1);
}

/* copy a stream to stdout */
static int
output_stream(FILE *fp)
{
        char    buf[8192];
        ssize_t n;

        if (fp == NULL)
                return(0);
        fflush(stdout);
        while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
                if (write(fileno(stdout), buf, n) != n)
                        return(0);
        return(!ferror(fp));
}

/* get next word from stream, leaving stream on EOL or start of next word */
static char *
fget_word(char buf[256], FILE *fp)
{
        int     c;
        char    *cp;
                                        /* skip nul's and white space */
        while (!(c = getc(fp)) || isspace(c))
                ;
        if (c == EOF)
                return(NULL);
        cp = buf;
        do
                *cp++ = c;
        while ((c = getc(fp)) != EOF && !isspace(c) && cp < buf+255);
        *cp = '\0';
        while (isspace(c) & (c != '\n'))
                c = getc(fp);
        if (c != EOF)
                ungetc(c, fp);
        return(buf);
}

char            *fmtid = NULL;                  /* format id */
int             comp_size = 0;                  /* binary bytes/channel */
int             n_comp = 0;                     /* components/record */
int             ni_columns = 0;                 /* number of input columns */
int             ni_rows = 0;                    /* number of input rows */
int             no_columns = 0;                 /* number of output columns */
int             no_rows = 0;                    /* number of output rows */
int             transpose = 0;                  /* transpose rows & cols? */
int             i_header = 1;                   /* input header? */
int             o_header = 1;                   /* output header? */

/* check settings and assign defaults */
static int
check_sizes()
{
        if (fmtid == NULL) {
                fmtid = "ascii";
        } else if (!comp_size) {
                if (!strcmp(fmtid, "float"))
                        comp_size = sizeof(float);
                else if (!strcmp(fmtid, "double"))
                        comp_size = sizeof(double);
                else if (!strcmp(fmtid, "byte"))
                        comp_size = 1;
                else if (strcmp(fmtid, "ascii")) {
                        fprintf(stderr, "Unsupported format: %s\n", fmtid);
                        return(0);
                }
        }
        if (transpose && (no_rows <= 0) & (no_columns <= 0)) {
                if (ni_rows > 0) no_columns = ni_rows;
                if (ni_columns > 0) no_rows = ni_columns;
        } else if ((no_rows <= 0) & (no_columns > 0) &&
                        !((ni_rows*ni_columns) % no_columns))
                no_rows = ni_rows*ni_columns/no_columns;
        if (n_comp <= 0)
                n_comp = 3;
        return(1);
}

/* output transposed ASCII or binary data from memory */
static int
do_transpose(const MEMLOAD *mp)
{
        static const char       tabEOL[2] = {'\t','\n'};
        RECINDEX                *rp = NULL;
        long                    nrecords;
        int                     i, j;
                                                /* propogate sizes */
        if (ni_rows <= 0)
                ni_rows = no_columns;
        if (ni_columns <= 0)
                ni_columns = no_rows;
                                                /* get # records (& index) */
        if (!comp_size) {
                if ((rp = index_records(mp, n_comp)) == NULL)
                        return(0);
                if (ni_columns <= 0)
                        ni_columns = count_columns(rp);
                nrecords = rp->nrecs;
        } else if ((ni_rows > 0) & (ni_columns > 0)) {
                nrecords = ni_rows*ni_columns;
                if (nrecords > mp->len/(n_comp*comp_size)) {
                        fprintf(stderr,
                            "Input too small for specified size and type\n");
                        return(0);
                }
        } else
                nrecords = mp->len/(n_comp*comp_size);
                                                /* check sizes */
        if ((ni_rows <= 0) & (ni_columns > 0))
                ni_rows = nrecords/ni_columns;
        if ((ni_columns <= 0) & (ni_rows > 0))
                ni_columns = nrecords/ni_rows;
        if (nrecords != ni_rows*ni_columns)
                goto badspec;
        if (no_columns <= 0)
                no_columns = ni_rows;
        if (no_rows <= 0)
                no_rows = ni_columns;
        if ((no_rows != ni_columns) | (no_columns != ni_rows))
                goto badspec;
                                                /* transpose records */
        for (i = 0; i < no_rows; i++) {
            for (j = 0; j < no_columns; j++)
                if (rp != NULL) {               /* ASCII output */
                        print_record(rp, j*ni_columns + i);
                        putc(tabEOL[j >= no_columns-1], stdout);
                } else {                        /* binary output */
                        fwrite((char *)mp->base +
                                        (n_comp*comp_size)*(j*ni_columns + i),
                                        n_comp*comp_size, 1, stdout);
                }
            if (ferror(stdout)) {
                fprintf(stderr, "Error writing to stdout\n");
                return(0);
            }
        }
        if (rp != NULL)
                free_records(rp);
        return(1);
badspec:
        fprintf(stderr, "Bad transpose specification -- check dimension(s)\n");
        return(0);
}

/* resize ASCII stream input by ignoring EOLs between records */
static int
do_resize(FILE *fp)
{
        long    records2go = ni_rows*ni_columns;
        int     columns2go = no_columns;
        char    word[256];
                                                /* sanity checks */
        if (comp_size || (no_columns == ni_columns) & (no_rows == ni_rows))
                return(output_stream(fp));      /* no-op -- just copy */
        if (no_columns <= 0) {
                fprintf(stderr, "Missing -oc specification\n");
                return(0);
        }
        if ((records2go <= 0) & (no_rows > 0))
                records2go = no_rows*no_columns;
        else if (no_rows*no_columns != records2go) {
                fprintf(stderr,
                        "Input and output data sizes disagree (%dx%d != %dx%d)\n",
                                ni_rows, ni_columns, no_rows, no_columns);
                return(0);
        }
        do {                                    /* reshape records */
                int     n;

                for (n = n_comp; n--; ) {
                        if (fget_word(word, fp) == NULL) {
                                if (records2go > 0 || n < n_comp-1)
                                        break;
                                goto done;      /* normal EOD */
                        }
                        fputs(word, stdout);
                        if (n) {                /* mid-record? */
                                int     c = getc(fp);
                                if ((c == '\n') | (c == EOF))
                                        break;
                                ungetc(c, fp);
                                putc(' ', stdout);
                        }
                }
                if (n >= 0) {
                        fprintf(stderr, "Incomplete record / unexpected EOF\n");
                        return(0);
                }
                if (--columns2go <= 0) {        /* time to end output row? */
                        putc('\n', stdout);
                        columns2go = no_columns;
                } else                          /* else separate records */
                        putc('\t', stdout);
        } while (--records2go);                 /* expected EOD? */
done:
        if (warnings && columns2go != no_columns)
                fprintf(stderr, "Warning -- incomplete final row\n");
        if (warnings && fget_word(word, fp) != NULL)
                fprintf(stderr, "Warning -- characters beyond expected EOD\n");
        return(1);
}

/* process a header line and copy to stdout */
static int
headline(char *s, void *p)
{
        static char     fmt[32];
        int             n;

        if (formatval(fmt, s)) {
                if (fmtid == NULL) {
                        fmtid = fmt;
                        return(0);
                }
                if (!strcmp(fmt, fmtid))
                        return(0);
                fprintf(stderr, "Input format '%s' != '%s'\n", fmt, fmtid);
                return(-1);
        }
        if (!strncmp(s, "NROWS=", 6)) {
                n = atoi(s+6);
                if ((ni_rows > 0) & (n != ni_rows)) {
                        fputs("Incorrect input row count\n", stderr);
                        return(-1);
                }
                ni_rows = n;
                return(0);
        }
        if (!strncmp(s, "NCOLS=", 6)) {
                n = atoi(s+6);
                if ((ni_columns > 0) & (n != ni_columns)) {
                        fputs("Incorrect input column count\n", stderr);
                        return(-1);
                }
                ni_columns = n;
                return(0);
        }
        if (!strncmp(s, "NCOMP=", 6)) {
                n = atoi(s+6);
                if ((n_comp > 0) & (n != n_comp)) {
                        fputs("Incorrect number of components\n", stderr);
                        return(-1);
                }
                n_comp = n;
                return(0);
        }
        if (o_header)
                fputs(s, stdout);               /* copy header info. */
        return(0);
}

/* main routine for converting rows/columns in data file */
int
main(int argc, char *argv[])
{
        int     a;

        for (a = 1; a < argc && argv[a][0] == '-'; a++)
                switch (argv[a][1]) {
                case 'i':                       /* input */
                        if (argv[a][2] == 'c')  /* columns */
                                ni_columns = atoi(argv[++a]);
                        else if (argv[a][2] == 'r')
                                ni_rows = atoi(argv[++a]);
                        else
                                goto userr;
                        break;
                case 'o':                       /* output */
                        if (argv[a][2] == 'c')  /* columns */
                                no_columns = atoi(argv[++a]);
                        else if (argv[a][2] == 'r')
                                no_rows = atoi(argv[++a]);
                        else
                                goto userr;
                        break;
                case 'h':                       /* turn off header */
                        switch (argv[a][2]) {
                        case 'i':
                                i_header = 0;
                                break;
                        case 'o':
                                o_header = 0;
                                break;
                        case '\0':
                                i_header = o_header = 0;
                                break;
                        default:
                                goto userr;
                        }
                        break;
                case 't':                       /* transpose on/off */
                        transpose = !transpose;
                        break;
                case 'f':                       /* format */
                        switch (argv[a][2]) {
                        case 'a':               /* ASCII */
                        case 'A':
                                fmtid = "ascii";
                                comp_size = 0;
                                break;
                        case 'f':               /* float */
                        case 'F':
                                fmtid = "float";
                                comp_size = sizeof(float);
                                break;
                        case 'd':               /* double */
                        case 'D':
                                fmtid = "double";
                                comp_size = sizeof(double);
                                break;
                        case 'b':               /* binary (bytes) */
                        case 'B':
                                fmtid = "byte";
                                comp_size = 1;
                                break;
                        default:
                                goto userr;
                        }
                        if (argv[a][3]) {
                                if (!isdigit(argv[a][3]))
                                        goto userr;
                                n_comp = atoi(argv[a]+3);
                        } else
                                n_comp = 1;
                        break;
                case 'w':                       /* warnings on/off */
                        warnings = !warnings;
                        break;
                default:
                        goto userr;
                }
        if (a < argc-1)                         /* arg count OK? */
                goto userr;
                                                /* open input file? */
        if (a == argc-1 && freopen(argv[a], "r", stdin) == NULL) {
                fprintf(stderr, "%s: cannot open for reading\n", argv[a]);
                return(1);
        }
        if (comp_size) {
                SET_FILE_BINARY(stdin);
                SET_FILE_BINARY(stdout);
        }
                                                /* check for no-op */
        if (!transpose & (i_header == o_header) &&
                        (no_columns == ni_columns) & (no_rows == ni_rows)) {
                if (warnings)
                        fprintf(stderr, "%s: no-op -- copying input verbatim\n",
                                argv[0]);
                if (!output_stream(stdin))
                        return(1);
                return(0);
        }
        if (i_header) {                         /* read header */
                if (getheader(stdin, headline, NULL) < 0)
                        return(1);
                if (!check_sizes())
                        return(1);
                if (comp_size) {                /* a little late... */
                        SET_FILE_BINARY(stdin);
                        SET_FILE_BINARY(stdout);
                }
        } else if (!check_sizes())
                return(1);
        if (o_header) {                         /* write header */
                printargs(a, argv, stdout);
                if (no_rows > 0)
                        printf("NROWS=%d\n", no_rows);
                if (no_columns > 0)
                        printf("NCOLS=%d\n", no_columns);
                printf("NCOMP=%d\n", n_comp);
                fputformat(fmtid, stdout);
                fputc('\n', stdout);            /* finish new header */
        }
        if (transpose) {                        /* transposing rows & columns? */
                MEMLOAD myMem;                  /* need to map into memory */
                if (a == argc-1) {
                        if (load_file(&myMem, stdin) <= 0) {
                                fprintf(stderr, "%s: error loading file into memory\n",
                                                argv[a]);
                                return(1);
                        }
                } else if (load_stream(&myMem, stdin) <= 0) {
                        fprintf(stderr, "%s: error loading stdin into memory\n",
                                                argv[0]);
                        return(1);
                }
                if (!do_transpose(&myMem))
                        return(1);
                /* free_load(&myMem);   about to exit, so don't bother */
        } else if (!do_resize(stdin))           /* reshaping input */
                return(1);
        return(0);
userr:
        fprintf(stderr,
"Usage: %s [-h[io]][-w][-f[afdb][N]][-t][-ic in_col][-ir in_row][-oc out_col][-or out_row] [input.dat]\n",
                        argv[0]);
        return(1);
}
Revision:	2.22
Committed:	Fri Mar 4 00:21:21 2016 UTC (8 years, 1 month ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.21:	+1 -8 lines
Log Message:	Eliminated redundant #define's for getc and putc
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.22	static const char RCSid[] = "$Id: rcollate.c,v 2.21 2015/06/16 20:35:56 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* Utility to re-order records in a binary or ASCII data file (matrix)
6			*/
7
8			#include <stdlib.h>
9			#include <string.h>
10			#include <ctype.h>
11			#include "platform.h"
12			#include "rtio.h"
13			#include "resolu.h"
14	greg	2.7	#ifdef _WIN32
15			#undef ftello
16			#define ftello ftell
17			#undef ssize_t
18			#define ssize_t size_t
19			#else
20	greg	2.1	#include <sys/mman.h>
21			#endif
22
23			typedef struct {
24			void base; / pointer to base memory */
25			size_t len; /* allocated memory length */
26			int mapped; /* memory-mapped file? */
27			} MEMLOAD; /* file loaded/mapped into memory */
28
29			typedef struct {
30			int nw_rec; /* number of words per record */
31			int nrecs; /* number of records we found */
32			char rec[1]; / record array (extends struct) */
33			} RECINDEX;
34
35	greg	2.4	int warnings = 1; /* report warnings? */
36
37	greg	2.1	/* free loaded file */
38			static void
39			free_load(MEMLOAD *mp)
40			{
41			if (mp == NULL \|\| (mp->base == NULL) \| (mp->len <= 0))
42			return;
43			#ifdef MAP_FILE
44			if (mp->mapped)
45			munmap(mp->base, mp->len);
46			else
47			#endif
48			free(mp->base);
49			mp->base = NULL;
50			mp->len = 0;
51			}
52
53	greg	2.20	/* load memory from an input stream, starting from current position */
54			static int
55			load_stream(MEMLOAD mp, FILE fp)
56			{
57			size_t alloced = 0;
58			char buf[8192];
59			size_t nr;
60
61			if (mp == NULL)
62			return(-1);
63			mp->base = NULL;
64			mp->len = 0;
65			mp->mapped = 0;
66			if (fp == NULL)
67			return(-1);
68			while ((nr = fread(buf, 1, sizeof(buf), fp)) > 0) {
69			if (!alloced)
70	greg	2.21	mp->base = malloc(alloced = nr);
71	greg	2.20	else if (mp->len+nr > alloced)
72			mp->base = realloc(mp->base,
73			alloced = alloced*(2+(nr==sizeof(buf)))/2+nr);
74			if (mp->base == NULL)
75			return(-1);
76			memcpy((char *)mp->base + mp->len, buf, nr);
77			mp->len += nr;
78			}
79			if (ferror(fp)) {
80			free_load(mp);
81			return(-1);
82			}
83			if (alloced > mp->len5/4) / don't waste too much space */
84			mp->base = realloc(mp->base, mp->len);
85			return(mp->len > 0);
86			}
87
88	greg	2.1	/* load a file into memory */
89			static int
90			load_file(MEMLOAD mp, FILE fp)
91			{
92			int fd;
93			off_t skip, flen;
94
95	greg	2.20	#ifdef _WIN32 /* too difficult to fix this */
96			return load_stream(mp, fp);
97			#endif
98	greg	2.1	if (mp == NULL)
99			return(-1);
100			mp->base = NULL;
101			mp->len = 0;
102			mp->mapped = 0;
103			if (fp == NULL)
104			return(-1);
105			fd = fileno(fp);
106			skip = ftello(fp);
107			flen = lseek(fd, 0, SEEK_END);
108			if (flen <= skip)
109			return((int)(flen - skip));
110			mp->len = (size_t)(flen - skip);
111			#ifdef MAP_FILE
112			if (mp->len > 1L<<20) { /* map file if > 1 MByte */
113	greg	2.2	mp->base = mmap(NULL, mp->len, PROT_READ, MAP_PRIVATE, fd, skip);
114	greg	2.1	if (mp->base != MAP_FAILED) {
115			mp->mapped = 1;
116			return(1); /* mmap() success */
117			}
118			mp->base = NULL; /* fall back to reading it in... */
119			}
120			#endif
121			if (lseek(fd, skip, SEEK_SET) != skip \|\|
122			(mp->base = malloc(mp->len)) == NULL) {
123			mp->len = 0;
124			return(-1);
125			}
126			if (read(fd, (char *)mp->base, mp->len) != mp->len) {
127			free_load(mp);
128			return(-1);
129			}
130			return(1);
131			}
132
133			/* free a record index */
134			#define free_records(rp) free(rp)
135
136			/* compute record index */
137			static RECINDEX *
138			index_records(const MEMLOAD *mp, int nw_rec)
139			{
140			RECINDEX *rp;
141			char cp, mend;
142			int n;
143
144			if (mp == NULL \|\| (mp->base == NULL) \| (mp->len <= 0))
145			return(NULL);
146			if (nw_rec <= 0)
147			return(NULL);
148			rp = (RECINDEX )malloc(sizeof(RECINDEX) + mp->len/(2nw_rec)sizeof(char ));
149			if (rp == NULL)
150			return(NULL);
151			rp->nw_rec = nw_rec;
152			rp->nrecs = 0;
153			cp = (char *)mp->base;
154			mend = cp + mp->len;
155			for ( ; ; ) { /* whitespace-separated words */
156			while (cp < mend && !cp \| isspace(cp))
157			++cp;
158			if (cp >= mend)
159			break;
160			rp->rec[rp->nrecs++] = cp; /* point to first non-white */
161			n = rp->nw_rec;
162			while (++cp < mend) /* find end of record */
163			if (!cp \| isspace(cp)) {
164			if (--n <= 0)
165			break; /* got requisite # words */
166			do { /* else find next word */
167			if (*cp == '\n') {
168			fprintf(stderr,
169			"Unexpected EOL in record!\n");
170			free_records(rp);
171			return(NULL);
172			}
173			if (++cp >= mend)
174			break;
175			} while (!cp \| isspace(cp));
176			}
177			}
178			rp->rec[rp->nrecs] = mend; /* reallocate to save space */
179			rp = (RECINDEX *)realloc(rp,
180			sizeof(RECINDEX) + rp->nrecssizeof(char ));
181			return(rp);
182			}
183
184			/* count number of columns based on first EOL */
185			static int
186			count_columns(const RECINDEX *rp)
187			{
188			char *cp = rp->rec[0];
189			char *mend = rp->rec[rp->nrecs];
190			int i;
191
192			while (*cp != '\n')
193			if (++cp >= mend)
194			return(0);
195			for (i = 0; i < rp->nrecs; i++)
196			if (rp->rec[i] >= cp)
197			break;
198			return(i);
199			}
200
201			/* copy nth record from index to stdout */
202			static int
203			print_record(const RECINDEX *rp, int n)
204			{
205			int words2go = rp->nw_rec;
206			char *scp;
207
208			if ((n < 0) \| (n >= rp->nrecs))
209			return(0);
210			scp = rp->rec[n];
211			do {
212			putc(*scp++, stdout);
213			if (!scp \| isspace(scp)) {
214			if (--words2go <= 0)
215			break;
216			putc(' ', stdout); /* single space btwn. words */
217			do
218			if (++scp >= rp->rec[n+1])
219			break;
220			while (!scp \| isspace(scp));
221			}
222			} while (scp < rp->rec[n+1]);
223			/* caller adds record sep. */
224			return(1);
225			}
226
227			/* copy a stream to stdout */
228			static int
229			output_stream(FILE *fp)
230			{
231			char buf[8192];
232			ssize_t n;
233
234			if (fp == NULL)
235			return(0);
236	greg	2.13	fflush(stdout);
237			while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
238	greg	2.1	if (write(fileno(stdout), buf, n) != n)
239			return(0);
240	greg	2.13	return(!ferror(fp));
241	greg	2.1	}
242
243			/* get next word from stream, leaving stream on EOL or start of next word */
244			static char *
245			fget_word(char buf[256], FILE *fp)
246			{
247			int c;
248			char *cp;
249			/* skip nul's and white space */
250			while (!(c = getc(fp)) \|\| isspace(c))
251			;
252			if (c == EOF)
253			return(NULL);
254			cp = buf;
255			do
256			*cp++ = c;
257			while ((c = getc(fp)) != EOF && !isspace(c) && cp < buf+255);
258			*cp = '\0';
259			while (isspace(c) & (c != '\n'))
260			c = getc(fp);
261			if (c != EOF)
262			ungetc(c, fp);
263			return(buf);
264			}
265
266	greg	2.9	char fmtid = NULL; / format id */
267			int comp_size = 0; /* binary bytes/channel */
268			int n_comp = 0; /* components/record */
269	greg	2.1	int ni_columns = 0; /* number of input columns */
270			int ni_rows = 0; /* number of input rows */
271			int no_columns = 0; /* number of output columns */
272			int no_rows = 0; /* number of output rows */
273	greg	2.16	int transpose = 0; /* transpose rows & cols? */
274			int i_header = 1; /* input header? */
275			int o_header = 1; /* output header? */
276	greg	2.1
277	greg	2.9	/* check settings and assign defaults */
278	greg	2.11	static int
279	greg	2.9	check_sizes()
280			{
281			if (fmtid == NULL) {
282			fmtid = "ascii";
283			} else if (!comp_size) {
284			if (!strcmp(fmtid, "float"))
285			comp_size = sizeof(float);
286			else if (!strcmp(fmtid, "double"))
287			comp_size = sizeof(double);
288			else if (!strcmp(fmtid, "byte"))
289			comp_size = 1;
290	greg	2.14	else if (strcmp(fmtid, "ascii")) {
291	greg	2.11	fprintf(stderr, "Unsupported format: %s\n", fmtid);
292			return(0);
293			}
294	greg	2.9	}
295	greg	2.16	if (transpose && (no_rows <= 0) & (no_columns <= 0)) {
296			if (ni_rows > 0) no_columns = ni_rows;
297			if (ni_columns > 0) no_rows = ni_columns;
298			} else if ((no_rows <= 0) & (no_columns > 0) &&
299			!((ni_rows*ni_columns) % no_columns))
300			no_rows = ni_rows*ni_columns/no_columns;
301	greg	2.9	if (n_comp <= 0)
302			n_comp = 3;
303	greg	2.11	return(1);
304	greg	2.9	}
305
306	greg	2.1	/* output transposed ASCII or binary data from memory */
307			static int
308			do_transpose(const MEMLOAD *mp)
309			{
310			static const char tabEOL[2] = {'\t','\n'};
311			RECINDEX *rp = NULL;
312			long nrecords;
313			int i, j;
314	greg	2.5	/* propogate sizes */
315			if (ni_rows <= 0)
316			ni_rows = no_columns;
317			if (ni_columns <= 0)
318			ni_columns = no_rows;
319	greg	2.1	/* get # records (& index) */
320	greg	2.9	if (!comp_size) {
321			if ((rp = index_records(mp, n_comp)) == NULL)
322	greg	2.1	return(0);
323			if (ni_columns <= 0)
324			ni_columns = count_columns(rp);
325			nrecords = rp->nrecs;
326	greg	2.3	} else if ((ni_rows > 0) & (ni_columns > 0)) {
327	greg	2.1	nrecords = ni_rows*ni_columns;
328	greg	2.9	if (nrecords > mp->len/(n_comp*comp_size)) {
329	greg	2.3	fprintf(stderr,
330			"Input too small for specified size and type\n");
331			return(0);
332			}
333			} else
334	greg	2.9	nrecords = mp->len/(n_comp*comp_size);
335	greg	2.1	/* check sizes */
336			if ((ni_rows <= 0) & (ni_columns > 0))
337			ni_rows = nrecords/ni_columns;
338			if ((ni_columns <= 0) & (ni_rows > 0))
339			ni_columns = nrecords/ni_rows;
340			if (nrecords != ni_rows*ni_columns)
341			goto badspec;
342			if (no_columns <= 0)
343			no_columns = ni_rows;
344			if (no_rows <= 0)
345			no_rows = ni_columns;
346			if ((no_rows != ni_columns) \| (no_columns != ni_rows))
347			goto badspec;
348			/* transpose records */
349			for (i = 0; i < no_rows; i++) {
350			for (j = 0; j < no_columns; j++)
351			if (rp != NULL) { /* ASCII output */
352			print_record(rp, j*ni_columns + i);
353			putc(tabEOL[j >= no_columns-1], stdout);
354			} else { /* binary output */
355			fwrite((char *)mp->base +
356	greg	2.9	(n_compcomp_size)(j*ni_columns + i),
357			n_comp*comp_size, 1, stdout);
358	greg	2.1	}
359			if (ferror(stdout)) {
360			fprintf(stderr, "Error writing to stdout\n");
361			return(0);
362			}
363			}
364			if (rp != NULL)
365			free_records(rp);
366			return(1);
367			badspec:
368			fprintf(stderr, "Bad transpose specification -- check dimension(s)\n");
369			return(0);
370			}
371
372			/* resize ASCII stream input by ignoring EOLs between records */
373			static int
374			do_resize(FILE *fp)
375			{
376			long records2go = ni_rows*ni_columns;
377			int columns2go = no_columns;
378			char word[256];
379			/* sanity checks */
380	greg	2.19	if (comp_size \|\| (no_columns == ni_columns) & (no_rows == ni_rows))
381			return(output_stream(fp)); /* no-op -- just copy */
382	greg	2.1	if (no_columns <= 0) {
383			fprintf(stderr, "Missing -oc specification\n");
384			return(0);
385			}
386			if ((records2go <= 0) & (no_rows > 0))
387			records2go = no_rows*no_columns;
388			else if (no_rows*no_columns != records2go) {
389			fprintf(stderr,
390			"Input and output data sizes disagree (%dx%d != %dx%d)\n",
391			ni_rows, ni_columns, no_rows, no_columns);
392			return(0);
393			}
394			do { /* reshape records */
395			int n;
396
397	greg	2.9	for (n = n_comp; n--; ) {
398	greg	2.1	if (fget_word(word, fp) == NULL) {
399	greg	2.9	if (records2go > 0 \|\| n < n_comp-1)
400	greg	2.1	break;
401			goto done; /* normal EOD */
402			}
403			fputs(word, stdout);
404			if (n) { /* mid-record? */
405			int c = getc(fp);
406			if ((c == '\n') \| (c == EOF))
407			break;
408			ungetc(c, fp);
409			putc(' ', stdout);
410			}
411			}
412			if (n >= 0) {
413			fprintf(stderr, "Incomplete record / unexpected EOF\n");
414			return(0);
415			}
416			if (--columns2go <= 0) { /* time to end output row? */
417			putc('\n', stdout);
418			columns2go = no_columns;
419			} else /* else separate records */
420			putc('\t', stdout);
421			} while (--records2go); /* expected EOD? */
422			done:
423	greg	2.4	if (warnings && columns2go != no_columns)
424	greg	2.1	fprintf(stderr, "Warning -- incomplete final row\n");
425	greg	2.4	if (warnings && fget_word(word, fp) != NULL)
426			fprintf(stderr, "Warning -- characters beyond expected EOD\n");
427	greg	2.1	return(1);
428			}
429
430			/* process a header line and copy to stdout */
431			static int
432			headline(char s, void p)
433			{
434	greg	2.9	static char fmt[32];
435			int n;
436	greg	2.1
437			if (formatval(fmt, s)) {
438	greg	2.9	if (fmtid == NULL) {
439			fmtid = fmt;
440			return(0);
441			}
442	greg	2.1	if (!strcmp(fmt, fmtid))
443			return(0);
444			fprintf(stderr, "Input format '%s' != '%s'\n", fmt, fmtid);
445			return(-1);
446			}
447	greg	2.9	if (!strncmp(s, "NROWS=", 6)) {
448			n = atoi(s+6);
449			if ((ni_rows > 0) & (n != ni_rows)) {
450			fputs("Incorrect input row count\n", stderr);
451			return(-1);
452			}
453			ni_rows = n;
454			return(0);
455			}
456			if (!strncmp(s, "NCOLS=", 6)) {
457			n = atoi(s+6);
458			if ((ni_columns > 0) & (n != ni_columns)) {
459			fputs("Incorrect input column count\n", stderr);
460			return(-1);
461			}
462			ni_columns = n;
463			return(0);
464			}
465			if (!strncmp(s, "NCOMP=", 6)) {
466			n = atoi(s+6);
467			if ((n_comp > 0) & (n != n_comp)) {
468	greg	2.14	fputs("Incorrect number of components\n", stderr);
469	greg	2.9	return(-1);
470			}
471			n_comp = n;
472			return(0);
473			}
474	greg	2.16	if (o_header)
475			fputs(s, stdout); /* copy header info. */
476	greg	2.1	return(0);
477			}
478
479			/* main routine for converting rows/columns in data file */
480			int
481			main(int argc, char *argv[])
482			{
483	greg	2.14	int a;
484	greg	2.1
485	greg	2.14	for (a = 1; a < argc && argv[a][0] == '-'; a++)
486			switch (argv[a][1]) {
487	greg	2.1	case 'i': /* input */
488	greg	2.14	if (argv[a][2] == 'c') /* columns */
489			ni_columns = atoi(argv[++a]);
490			else if (argv[a][2] == 'r')
491			ni_rows = atoi(argv[++a]);
492	greg	2.1	else
493			goto userr;
494			break;
495			case 'o': /* output */
496	greg	2.14	if (argv[a][2] == 'c') /* columns */
497			no_columns = atoi(argv[++a]);
498			else if (argv[a][2] == 'r')
499			no_rows = atoi(argv[++a]);
500	greg	2.1	else
501			goto userr;
502			break;
503	greg	2.10	case 'h': /* turn off header */
504	greg	2.14	switch (argv[a][2]) {
505	greg	2.10	case 'i':
506			i_header = 0;
507			break;
508			case 'o':
509			o_header = 0;
510			break;
511			case '\0':
512			i_header = o_header = 0;
513			break;
514			default:
515			goto userr;
516			}
517	greg	2.1	break;
518			case 't': /* transpose on/off */
519			transpose = !transpose;
520			break;
521			case 'f': /* format */
522	greg	2.14	switch (argv[a][2]) {
523	greg	2.1	case 'a': /* ASCII */
524			case 'A':
525			fmtid = "ascii";
526	greg	2.9	comp_size = 0;
527	greg	2.1	break;
528			case 'f': /* float */
529			case 'F':
530			fmtid = "float";
531	greg	2.9	comp_size = sizeof(float);
532	greg	2.1	break;
533			case 'd': /* double */
534			case 'D':
535			fmtid = "double";
536	greg	2.9	comp_size = sizeof(double);
537	greg	2.1	break;
538			case 'b': /* binary (bytes) */
539			case 'B':
540			fmtid = "byte";
541	greg	2.9	comp_size = 1;
542	greg	2.1	break;
543			default:
544			goto userr;
545			}
546	greg	2.14	if (argv[a][3]) {
547			if (!isdigit(argv[a][3]))
548	greg	2.1	goto userr;
549	greg	2.14	n_comp = atoi(argv[a]+3);
550			} else
551			n_comp = 1;
552	greg	2.1	break;
553	greg	2.4	case 'w': /* warnings on/off */
554			warnings = !warnings;
555			break;
556	greg	2.1	default:
557			goto userr;
558			}
559	greg	2.14	if (a < argc-1) /* arg count OK? */
560	greg	2.1	goto userr;
561			/* open input file? */
562	greg	2.14	if (a == argc-1 && freopen(argv[a], "r", stdin) == NULL) {
563			fprintf(stderr, "%s: cannot open for reading\n", argv[a]);
564	greg	2.1	return(1);
565			}
566	greg	2.9	if (comp_size) {
567	greg	2.1	SET_FILE_BINARY(stdin);
568			SET_FILE_BINARY(stdout);
569			}
570			/* check for no-op */
571	greg	2.19	if (!transpose & (i_header == o_header) &&
572			(no_columns == ni_columns) & (no_rows == ni_rows)) {
573	greg	2.4	if (warnings)
574			fprintf(stderr, "%s: no-op -- copying input verbatim\n",
575	greg	2.1	argv[0]);
576			if (!output_stream(stdin))
577			return(1);
578			return(0);
579			}
580	greg	2.10	if (i_header) { /* read header */
581	greg	2.15	if (getheader(stdin, headline, NULL) < 0)
582	greg	2.1	return(1);
583	greg	2.11	if (!check_sizes())
584			return(1);
585	greg	2.9	if (comp_size) { /* a little late... */
586			SET_FILE_BINARY(stdin);
587			SET_FILE_BINARY(stdout);
588			}
589	greg	2.11	} else if (!check_sizes())
590			return(1);
591	greg	2.10	if (o_header) { /* write header */
592	greg	2.14	printargs(a, argv, stdout);
593	greg	2.9	if (no_rows > 0)
594			printf("NROWS=%d\n", no_rows);
595			if (no_columns > 0)
596			printf("NCOLS=%d\n", no_columns);
597			printf("NCOMP=%d\n", n_comp);
598	greg	2.1	fputformat(fmtid, stdout);
599			fputc('\n', stdout); /* finish new header */
600	greg	2.10	}
601	greg	2.1	if (transpose) { /* transposing rows & columns? */
602	greg	2.19	MEMLOAD myMem; /* need to map into memory */
603	greg	2.14	if (a == argc-1) {
604	greg	2.1	if (load_file(&myMem, stdin) <= 0) {
605			fprintf(stderr, "%s: error loading file into memory\n",
606	greg	2.14	argv[a]);
607	greg	2.1	return(1);
608			}
609			} else if (load_stream(&myMem, stdin) <= 0) {
610			fprintf(stderr, "%s: error loading stdin into memory\n",
611			argv[0]);
612			return(1);
613			}
614			if (!do_transpose(&myMem))
615			return(1);
616	greg	2.17	/* free_load(&myMem); about to exit, so don't bother */
617			} else if (!do_resize(stdin)) /* reshaping input */
618	greg	2.1	return(1);
619			return(0);
620			userr:
621			fprintf(stderr,
622	greg	2.10	"Usage: %s [-h[io]][-w][-f[afdb][N]][-t][-ic in_col][-ir in_row][-oc out_col][-or out_row] [input.dat]\n",
623	greg	2.1	argv[0]);
624			return(1);
625			}