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/******************************************************************************
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* $Id: cs2cs.c,v 1.4 2001/04/05 19:32:19 warmerda Exp $
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* Purpose: Mainline program sort of like ``proj'' for converting between
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* two coordinate systems.
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* Author: Frank Warmerdam, warmerda@home.com
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******************************************************************************
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* Copyright (c) 2000, Frank Warmerdam
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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******************************************************************************
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* Revision 1.4 2001/04/05 19:32:19 warmerda
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* use projPJ, and pj_is_latlong()
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* Revision 1.3 2001/04/05 04:23:28 warmerda
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* use pj_latlong_from_proj
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* Revision 1.2 2001/02/03 18:36:55 warmerda
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* removed some unavailable options from usage string
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* Revision 1.1 2000/07/06 23:32:27 warmerda
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static projPJ fromProj, toProj;
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reversein = 0, /* != 0 reverse input arguments */
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reverseout = 0, /* != 0 reverse output arguments */
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echoin = 0, /* echo input data to output line */
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tag = '#'; /* beginning of line tag character */
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*oform = (char *)0, /* output format for x-y or decimal degrees */
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*oterr = "*\t*", /* output line for unprojectable input */
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"%s\nusage: %s [ -eEfIlrstvwW [args] ] [ +opts[=arg] ]\n"
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" [+to [+opts[=arg] [ files ]\n";
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static struct FACTORS facs;
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static double (*informat)(const char *,
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char **); /* input data deformatter function */
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/************************************************************************/
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/* File processing function. */
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/************************************************************************/
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static void process(FILE *fid)
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char line[MAX_LINE+3], *s, pline[40];
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++emess_dat.File_line;
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if (!(s = fgets(line, MAX_LINE, fid)))
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if (!strchr(s, '\n')) { /* overlong line */
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(void)strcat(s, "\n");
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/* gobble up to newline */
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while ((c = fgetc(fid)) != EOF && c != '\n') ;
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data.v = (*informat)(s, &s);
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data.u = (*informat)(s, &s);
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data.u = (*informat)(s, &s);
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data.v = (*informat)(s, &s);
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if (data.v == HUGE_VAL)
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if (!*s && (s > line)) --s; /* assumed we gobbled \n */
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(void)fputs(line, stdout);
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if (data.u != HUGE_VAL) {
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if( pj_transform( fromProj, toProj, 1, 0,
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&(data.u), &(data.v), &z ) != 0 )
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if (data.u == HUGE_VAL) /* error output */
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fputs(oterr, stdout);
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else if (pj_is_latlong(toProj) && !oform) { /*ascii DMS output */
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fputs(rtodms(pline, data.v, 'N', 'S'), stdout);
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fputs(rtodms(pline, data.u, 'E', 'W'), stdout);
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fputs(rtodms(pline, data.u, 'E', 'W'), stdout);
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fputs(rtodms(pline, data.v, 'N', 'S'), stdout);
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} else { /* x-y or decimal degree ascii output */
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if ( pj_is_latlong(toProj) ) {
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data.v *= RAD_TO_DEG;
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data.u *= RAD_TO_DEG;
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printf(oform,data.v); putchar('\t');
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printf(oform,data.u);
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printf(oform,data.u); putchar('\t');
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printf(oform,data.v);
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fputs("\n", stdout );
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/************************************************************************/
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/************************************************************************/
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int main(int argc, char **argv)
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char *arg, **eargv = argv, *from_argv[MAX_PARGS], *to_argv[MAX_PARGS],
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int from_argc=0, to_argc=0, iargc = argc, eargc = 0, c, mon = 0;
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int have_to_flag = 0, inverse = 0, i;
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if (emess_dat.Prog_name = strrchr(*argv,DIR_CHAR))
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++emess_dat.Prog_name;
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else emess_dat.Prog_name = *argv;
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inverse = ! strncmp(emess_dat.Prog_name, "inv", 3);
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(void)fprintf(stderr, usage, pj_release, emess_dat.Prog_name);
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/* process run line arguments */
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while (--argc > 0) { /* collect run line arguments */
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if(**++argv == '-') for(arg = *argv;;) {
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case '\0': /* position of "stdin" */
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if (arg[-1] == '-') eargv[eargc++] = "-";
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case 'v': /* monitor dump of initialization */
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case 'I': /* alt. method to spec inverse */
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case 'E': /* echo ascii input to ascii output */
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case 't': /* set col. one char */
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if (arg[1]) tag = *++arg;
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else emess(1,"missing -t col. 1 tag");
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case 'l': /* list projections, ellipses or units */
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if (!arg[1] || arg[1] == 'p' || arg[1] == 'P') {
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/* list projections */
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int do_long = arg[1] == 'P', c;
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for (lp = pj_list ; lp->id ; ++lp) {
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(void)printf("%s : ", lp->id);
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if (do_long) /* possibly multiline description */
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(void)puts(*lp->descr);
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else { /* first line, only */
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while ((c = *str++) && c != '\n')
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} else if (arg[1] == '=') { /* list projection 'descr' */
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for (lp = pj_list ; lp->id ; ++lp)
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if (!strcmp(lp->id, arg)) {
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(void)printf("%9s : %s\n", lp->id, *lp->descr);
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} else if (arg[1] == 'e') { /* list ellipses */
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for (le = pj_ellps; le->id ; ++le)
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(void)printf("%9s %-16s %-16s %s\n",
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le->id, le->major, le->ell, le->name);
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} else if (arg[1] == 'u') { /* list units */
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for (lu = pj_units; lu->id ; ++lu)
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(void)printf("%12s %-20s %s\n",
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lu->id, lu->to_meter, lu->name);
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} else if (arg[1] == 'd') { /* list datums */
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struct PJ_DATUMS *ld;
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printf("__datum_id__ __ellipse___ __definition/comments______________________________\n" );
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for (ld = pj_datums; ld->id ; ++ld)
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printf("%12s %-12s %-30s\n",
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ld->id, ld->ellipse_id, ld->defn);
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if( ld->comments != NULL && strlen(ld->comments) > 0 )
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printf( "%25s %s\n", " ", ld->comments );
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emess(1,"invalid list option: l%c",arg[1]);
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continue; /* artificial */
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case 'e': /* error line alternative */
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emess(1,"missing argument for -%c",*arg);
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case 'W': /* specify seconds precision */
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case 'w': /* -W for constant field width */
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if ((c = arg[1]) != 0 && isdigit(c)) {
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set_rtodms(c - '0', *arg == 'W');
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emess(1,"-W argument missing or non-digit");
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case 'f': /* alternate output format degrees or xy */
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if (--argc <= 0) goto noargument;
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case 'r': /* reverse input */
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case 's': /* reverse output */
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emess(1, "invalid option: -%c",*arg);
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} else if (strcmp(*argv,"+to") == 0 ) {
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} else if (**argv == '+') { /* + argument */
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if( to_argc < MAX_PARGS )
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to_argv[to_argc++] = *argv + 1;
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emess(1,"overflowed + argument table");
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if (from_argc < MAX_PARGS)
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from_argv[from_argc++] = *argv + 1;
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emess(1,"overflowed + argument table");
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} else /* assumed to be input file name(s) */
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eargv[eargc++] = *argv;
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if (eargc == 0 ) /* if no specific files force sysin */
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eargv[eargc++] = "-";
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* If the user has requested inverse, then just reverse the
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* coordinate systems.
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for( i = 0; i < MAX_PARGS; i++ )
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from_argv[i] = to_argv[i];
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argcount = from_argc;
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if (!(fromProj = pj_init(from_argc, from_argv)))
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printf( "Using from definition: " );
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for( i = 0; i < from_argc; i++ )
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printf( "%s ", from_argv[i] );
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emess(3,"projection initialization failure\ncause: %s",
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pj_strerrno(pj_errno));
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if (!(toProj = pj_latlong_from_proj( fromProj )))
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printf( "Using to definition: " );
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for( i = 0; i < to_argc; i++ )
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printf( "%s ", to_argv[i] );
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emess(3,"projection initialization failure\ncause: %s",
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pj_strerrno(pj_errno));
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else if (!(toProj = pj_init(to_argc, to_argv)))
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printf( "Using to definition: " );
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for( i = 0; i < to_argc; i++ )
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printf( "%s ", to_argv[i] );
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emess(3,"projection initialization failure\ncause: %s",
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pj_strerrno(pj_errno));
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printf( "%c ---- From Coordinate System ----\n", tag );
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pj_pr_list(fromProj);
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printf( "%c ---- To Coordinate System ----\n", tag );
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/* set input formating control */
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if( !fromProj->is_latlong )
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if( !toProj->is_latlong && !oform )
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/* process input file list */
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for ( ; eargc-- ; ++eargv) {
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if (**eargv == '-') {
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emess_dat.File_name = "<stdin>";
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if ((fid = fopen(*eargv, "rt")) == NULL) {
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emess(-2, *eargv, "input file");
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emess_dat.File_name = *eargv;
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emess_dat.File_line = 0;
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emess_dat.File_name = 0;
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exit(0); /* normal completion */
added
removed
src/cs2cs.c
