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grparser.c
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grparser.c
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/* T E M P L A T E P A R S E R
=============================
by Jerzy.Borkowski@obs.unige.ch
Integral Science Data Center
ch. d'Ecogia 16
1290 Versoix
Switzerland
14-Oct-98: initial release
16-Oct-98: code cleanup, #include <string.h> included, now gcc -Wall prints no
warnings during compilation. Bugfix: now one can specify additional
columns in group HDU. Autoindexing also works in this situation
(colunms are number from 7 however).
17-Oct-98: bugfix: complex keywords were incorrectly written (was TCOMPLEX should
be TDBLCOMPLEX).
20-Oct-98: bugfix: parser was writing EXTNAME twice, when first HDU in template is
defined with XTENSION IMAGE then parser creates now dummy PHDU,
SIMPLE T is now allowed only at most once and in first HDU only.
WARNING: one should not define EXTNAME keyword for GROUP HDUs, as
they have them already defined by parser (EXTNAME = GROUPING).
Parser accepts EXTNAME oin GROUP HDU definition, but in this
case multiple EXTNAME keywords will present in HDU header.
23-Oct-98: bugfix: unnecessary space was written to FITS file for blank
keywords.
24-Oct-98: syntax change: empty lines and lines with only whitespaces are
written to FITS files as blank keywords (if inside group/hdu
definition). Previously lines had to have at least 8 spaces.
Please note, that due to pecularities of CFITSIO if the
last keyword(s) defined for given HDU are blank keywords
consisting of only 80 spaces, then (some of) those keywords
may be silently deleted by CFITSIO.
13-Nov-98: bugfix: parser was writing GRPNAME twice. Parser still creates
GRPNAME keywords for GROUP HDU's which do not specify them.
However, values (of form DEFAULT_GROUP_XXX) are assigned
not necessarily in order HDUs appear in template file, but
rather in order parser completes their creation in FITS
file. Also, when including files, if fopen fails, parser
tries to open file with a name = directory_of_top_level
file + name of file to be included, as long as name
of file to be included does not specify absolute pathname.
16-Nov-98: bugfix to bugfix from 13-Nov-98
19-Nov-98: EXTVER keyword is now automatically assigned value by parser.
17-Dev-98: 2 new things added: 1st: CFITSIO_INCLUDE_FILES environment
variable can contain a colon separated list of directories
to look for when looking for template include files (and master
template also). 2nd: it is now possible to append template
to nonempty FITS. file. fitsfile *ff no longer needs to point
to an empty FITS file with 0 HDUs in it. All data written by
parser will simple be appended at the end of file.
22-Jan-99: changes to parser: when in append mode parser initially scans all
existing HDUs to built a list of already used EXTNAME/EXTVERs
22-Jan-99: Bruce O'Neel, bugfix : TLONG should always reference long type
variable on OSF/Alpha and on 64-bit archs in general
20-Jun-2002 Wm Pence, added support for the HIERARCH keyword convention in
which keyword names can effectively be longer than 8 characters.
Example:
HIERARCH LongKeywordName = 'value' / comment
30-Jan-2003 Wm Pence, bugfix: ngp_read_xtension was testing for "ASCIITABLE"
instead of "TABLE" as the XTENSION value of an ASCII table,
and it did not allow for optional trailing spaces in the
"IMAGE" or "TABLE" string.
16-Dec-2003 James Peachey: ngp_keyword_all_write was modified to apply
comments from the template file to the output file in
the case of reserved keywords (e.g. tform#, ttype# etcetera).
*/
#include <stdio.h>
#include <stdlib.h>
#ifdef sparc
#include <malloc.h>
#include <memory.h>
#endif
#include <string.h>
#include "fitsio2.h"
#include "grparser.h"
NGP_RAW_LINE ngp_curline = { NULL, NULL, NULL, NGP_TTYPE_UNKNOWN, NULL, NGP_FORMAT_OK, 0 };
NGP_RAW_LINE ngp_prevline = { NULL, NULL, NULL, NGP_TTYPE_UNKNOWN, NULL, NGP_FORMAT_OK, 0 };
int ngp_inclevel = 0; /* number of included files, 1 - means mean file */
int ngp_grplevel = 0; /* group nesting level, 0 - means no grouping */
FILE *ngp_fp[NGP_MAX_INCLUDE]; /* stack of included file handles */
int ngp_keyidx = NGP_TOKEN_UNKNOWN; /* index of token in current line */
NGP_TOKEN ngp_linkey; /* keyword after line analyze */
char ngp_master_dir[NGP_MAX_FNAME]; /* directory of top level include file */
NGP_TKDEF ngp_tkdef[] = /* tokens recognized by parser */
{ { "\\INCLUDE", NGP_TOKEN_INCLUDE },
{ "\\GROUP", NGP_TOKEN_GROUP },
{ "\\END", NGP_TOKEN_END },
{ "XTENSION", NGP_TOKEN_XTENSION },
{ "SIMPLE", NGP_TOKEN_SIMPLE },
{ NULL, NGP_TOKEN_UNKNOWN }
};
int master_grp_idx = 1; /* current unnamed group in object */
int ngp_extver_tab_size = 0;
NGP_EXTVER_TAB *ngp_extver_tab = NULL;
int ngp_get_extver(char *extname, int *version)
{ NGP_EXTVER_TAB *p;
char *p2;
int i;
if ((NULL == extname) || (NULL == version)) return(NGP_BAD_ARG);
if ((NULL == ngp_extver_tab) && (ngp_extver_tab_size > 0)) return(NGP_BAD_ARG);
if ((NULL != ngp_extver_tab) && (ngp_extver_tab_size <= 0)) return(NGP_BAD_ARG);
for (i=0; i<ngp_extver_tab_size; i++)
{ if (0 == strcmp(extname, ngp_extver_tab[i].extname))
{ *version = (++ngp_extver_tab[i].version);
return(NGP_OK);
}
}
if (NULL == ngp_extver_tab)
{ p = (NGP_EXTVER_TAB *)ngp_alloc(sizeof(NGP_EXTVER_TAB)); }
else
{ p = (NGP_EXTVER_TAB *)ngp_realloc(ngp_extver_tab, (ngp_extver_tab_size + 1) * sizeof(NGP_EXTVER_TAB)); }
if (NULL == p) return(NGP_NO_MEMORY);
p2 = ngp_alloc(strlen(extname) + 1);
if (NULL == p2)
{ ngp_free(p);
return(NGP_NO_MEMORY);
}
strcpy(p2, extname);
ngp_extver_tab = p;
ngp_extver_tab[ngp_extver_tab_size].extname = p2;
*version = ngp_extver_tab[ngp_extver_tab_size].version = 1;
ngp_extver_tab_size++;
return(NGP_OK);
}
int ngp_set_extver(char *extname, int version)
{ NGP_EXTVER_TAB *p;
char *p2;
int i;
if (NULL == extname) return(NGP_BAD_ARG);
if ((NULL == ngp_extver_tab) && (ngp_extver_tab_size > 0)) return(NGP_BAD_ARG);
if ((NULL != ngp_extver_tab) && (ngp_extver_tab_size <= 0)) return(NGP_BAD_ARG);
for (i=0; i<ngp_extver_tab_size; i++)
{ if (0 == strcmp(extname, ngp_extver_tab[i].extname))
{ if (version > ngp_extver_tab[i].version) ngp_extver_tab[i].version = version;
return(NGP_OK);
}
}
if (NULL == ngp_extver_tab)
{ p = (NGP_EXTVER_TAB *)ngp_alloc(sizeof(NGP_EXTVER_TAB)); }
else
{ p = (NGP_EXTVER_TAB *)ngp_realloc(ngp_extver_tab, (ngp_extver_tab_size + 1) * sizeof(NGP_EXTVER_TAB)); }
if (NULL == p) return(NGP_NO_MEMORY);
p2 = ngp_alloc(strlen(extname) + 1);
if (NULL == p2)
{ ngp_free(p);
return(NGP_NO_MEMORY);
}
strcpy(p2, extname);
ngp_extver_tab = p;
ngp_extver_tab[ngp_extver_tab_size].extname = p2;
ngp_extver_tab[ngp_extver_tab_size].version = version;
ngp_extver_tab_size++;
return(NGP_OK);
}
int ngp_delete_extver_tab(void)
{ int i;
if ((NULL == ngp_extver_tab) && (ngp_extver_tab_size > 0)) return(NGP_BAD_ARG);
if ((NULL != ngp_extver_tab) && (ngp_extver_tab_size <= 0)) return(NGP_BAD_ARG);
if ((NULL == ngp_extver_tab) && (0 == ngp_extver_tab_size)) return(NGP_OK);
for (i=0; i<ngp_extver_tab_size; i++)
{ if (NULL != ngp_extver_tab[i].extname)
{ ngp_free(ngp_extver_tab[i].extname);
ngp_extver_tab[i].extname = NULL;
}
ngp_extver_tab[i].version = 0;
}
ngp_free(ngp_extver_tab);
ngp_extver_tab = NULL;
ngp_extver_tab_size = 0;
return(NGP_OK);
}
/* read one line from file */
int ngp_line_from_file(FILE *fp, char **p)
{ int c, r, llen, allocsize, alen;
char *p2;
if (NULL == fp) return(NGP_NUL_PTR); /* check for stupid args */
if (NULL == p) return(NGP_NUL_PTR); /* more foolproof checks */
r = NGP_OK; /* initialize stuff, reset err code */
llen = 0; /* 0 characters read so far */
*p = (char *)ngp_alloc(1); /* preallocate 1 byte */
allocsize = 1; /* signal that we have allocated 1 byte */
if (NULL == *p) return(NGP_NO_MEMORY); /* if this failed, system is in dire straits */
for (;;)
{ c = getc(fp); /* get next character */
if ('\r' == c) continue; /* carriage return character ? Just ignore it */
if (EOF == c) /* EOF signalled ? */
{
if (ferror(fp)) r = NGP_READ_ERR; /* was it real error or simply EOF ? */
if (0 == llen) return(NGP_EOF); /* signal EOF only if 0 characters read so far */
break;
}
if ('\n' == c) break; /* end of line character ? */
llen++; /* we have new character, make room for it */
alen = ((llen + NGP_ALLOCCHUNK) / NGP_ALLOCCHUNK) * NGP_ALLOCCHUNK;
if (alen > allocsize)
{ p2 = (char *)ngp_realloc(*p, alen); /* realloc buffer, if there is need */
if (NULL == p2)
{ r = NGP_NO_MEMORY;
break;
}
*p = p2;
allocsize = alen;
}
(*p)[llen - 1] = c; /* copy character to buffer */
}
llen++; /* place for terminating \0 */
if (llen != allocsize)
{ p2 = (char *)ngp_realloc(*p, llen);
if (NULL == p2) r = NGP_NO_MEMORY;
else
{ *p = p2;
(*p)[llen - 1] = 0; /* copy \0 to buffer */
}
}
else
{ (*p)[llen - 1] = 0; /* necessary when line read was empty */
}
if ((NGP_EOF != r) && (NGP_OK != r)) /* in case of errors free resources */
{ ngp_free(*p);
*p = NULL;
}
return(r); /* return status code */
}
/* free current line structure */
int ngp_free_line(void)
{
if (NULL != ngp_curline.line)
{ ngp_free(ngp_curline.line);
ngp_curline.line = NULL;
ngp_curline.name = NULL;
ngp_curline.value = NULL;
ngp_curline.comment = NULL;
ngp_curline.type = NGP_TTYPE_UNKNOWN;
ngp_curline.format = NGP_FORMAT_OK;
ngp_curline.flags = 0;
}
return(NGP_OK);
}
/* free cached line structure */
int ngp_free_prevline(void)
{
if (NULL != ngp_prevline.line)
{ ngp_free(ngp_prevline.line);
ngp_prevline.line = NULL;
ngp_prevline.name = NULL;
ngp_prevline.value = NULL;
ngp_prevline.comment = NULL;
ngp_prevline.type = NGP_TTYPE_UNKNOWN;
ngp_prevline.format = NGP_FORMAT_OK;
ngp_prevline.flags = 0;
}
return(NGP_OK);
}
/* read one line */
int ngp_read_line_buffered(FILE *fp)
{
ngp_free_line(); /* first free current line (if any) */
if (NULL != ngp_prevline.line) /* if cached, return cached line */
{ ngp_curline = ngp_prevline;
ngp_prevline.line = NULL;
ngp_prevline.name = NULL;
ngp_prevline.value = NULL;
ngp_prevline.comment = NULL;
ngp_prevline.type = NGP_TTYPE_UNKNOWN;
ngp_prevline.format = NGP_FORMAT_OK;
ngp_prevline.flags = 0;
ngp_curline.flags = NGP_LINE_REREAD;
return(NGP_OK);
}
ngp_curline.flags = 0; /* if not cached really read line from file */
return(ngp_line_from_file(fp, &(ngp_curline.line)));
}
/* unread line */
int ngp_unread_line(void)
{
if (NULL == ngp_curline.line) /* nothing to unread */
return(NGP_EMPTY_CURLINE);
if (NULL != ngp_prevline.line) /* we cannot unread line twice */
return(NGP_UNREAD_QUEUE_FULL);
ngp_prevline = ngp_curline;
ngp_curline.line = NULL;
return(NGP_OK);
}
/* a first guess line decomposition */
int ngp_extract_tokens(NGP_RAW_LINE *cl)
{ char *p, *s;
int cl_flags, i;
p = cl->line; /* start from beginning of line */
if (NULL == p) return(NGP_NUL_PTR);
cl->name = cl->value = cl->comment = NULL;
cl->type = NGP_TTYPE_UNKNOWN;
cl->format = NGP_FORMAT_OK;
cl_flags = 0;
for (i=0;; i++) /* if 8 spaces at beginning then line is comment */
{ if ((0 == *p) || ('\n' == *p))
{ /* if line has only blanks -> write blank keyword */
cl->line[0] = 0; /* create empty name (0 length string) */
cl->comment = cl->name = cl->line;
cl->type = NGP_TTYPE_RAW; /* signal write unformatted to FITS file */
return(NGP_OK);
}
if ((' ' != *p) && ('\t' != *p)) break;
if (i >= 7)
{
cl->comment = p + 1;
for (s = cl->comment;; s++) /* filter out any EOS characters in comment */
{ if ('\n' == *s) *s = 0;
if (0 == *s) break;
}
cl->line[0] = 0; /* create empty name (0 length string) */
cl->name = cl->line;
cl->type = NGP_TTYPE_RAW;
return(NGP_OK);
}
p++;
}
cl->name = p;
for (;;) /* we need to find 1st whitespace */
{ if ((0 == *p) || ('\n' == *p))
{ *p = 0;
break;
}
/*
from Richard Mathar, 2002-05-03, add 10 lines:
if upper/lowercase HIERARCH followed also by an equal sign...
*/
if( fits_strncasecmp("HIERARCH",p,strlen("HIERARCH")) == 0 )
{
char * const eqsi=strchr(p,'=') ;
if( eqsi )
{
cl_flags |= NGP_FOUND_EQUAL_SIGN ;
p=eqsi ;
break ;
}
}
if ((' ' == *p) || ('\t' == *p)) break;
if ('=' == *p)
{ cl_flags |= NGP_FOUND_EQUAL_SIGN;
break;
}
p++;
}
if (*p) *(p++) = 0; /* found end of keyname so terminate string with zero */
if ((!fits_strcasecmp("HISTORY", cl->name))
|| (!fits_strcasecmp("COMMENT", cl->name))
|| (!fits_strcasecmp("CONTINUE", cl->name)))
{ cl->comment = p;
for (s = cl->comment;; s++) /* filter out any EOS characters in comment */
{ if ('\n' == *s) *s = 0;
if (0 == *s) break;
}
cl->type = NGP_TTYPE_RAW;
return(NGP_OK);
}
if (!fits_strcasecmp("\\INCLUDE", cl->name))
{
for (;; p++) if ((' ' != *p) && ('\t' != *p)) break; /* skip whitespace */
cl->value = p;
for (s = cl->value;; s++) /* filter out any EOS characters */
{ if ('\n' == *s) *s = 0;
if (0 == *s) break;
}
cl->type = NGP_TTYPE_UNKNOWN;
return(NGP_OK);
}
for (;; p++)
{ if ((0 == *p) || ('\n' == *p)) return(NGP_OK); /* test if at end of string */
if ((' ' == *p) || ('\t' == *p)) continue; /* skip whitespace */
if (cl_flags & NGP_FOUND_EQUAL_SIGN) break;
if ('=' != *p) break; /* ignore initial equal sign */
cl_flags |= NGP_FOUND_EQUAL_SIGN;
}
if ('/' == *p) /* no value specified, comment only */
{ p++;
if ((' ' == *p) || ('\t' == *p)) p++;
cl->comment = p;
for (s = cl->comment;; s++) /* filter out any EOS characters in comment */
{ if ('\n' == *s) *s = 0;
if (0 == *s) break;
}
return(NGP_OK);
}
if ('\'' == *p) /* we have found string within quotes */
{ cl->value = s = ++p; /* set pointer to beginning of that string */
cl->type = NGP_TTYPE_STRING; /* signal that it is of string type */
for (;;) /* analyze it */
{ if ((0 == *p) || ('\n' == *p)) /* end of line -> end of string */
{ *s = 0; return(NGP_OK); }
if ('\'' == *p) /* we have found doublequote */
{ if ((0 == p[1]) || ('\n' == p[1]))/* doublequote is the last character in line */
{ *s = 0; return(NGP_OK); }
if (('\t' == p[1]) || (' ' == p[1])) /* duoblequote was string terminator */
{ *s = 0; p++; break; }
if ('\'' == p[1]) p++; /* doublequote is inside string, convert "" -> " */
}
*(s++) = *(p++); /* compact string in place, necess. by "" -> " conversion */
}
}
else /* regular token */
{
cl->value = p; /* set pointer to token */
cl->type = NGP_TTYPE_UNKNOWN; /* we dont know type at the moment */
for (;; p++) /* we need to find 1st whitespace */
{ if ((0 == *p) || ('\n' == *p))
{ *p = 0; return(NGP_OK); }
if ((' ' == *p) || ('\t' == *p)) break;
}
if (*p) *(p++) = 0; /* found so terminate string with zero */
}
for (;; p++)
{ if ((0 == *p) || ('\n' == *p)) return(NGP_OK); /* test if at end of string */
if ((' ' != *p) && ('\t' != *p)) break; /* skip whitespace */
}
if ('/' == *p) /* no value specified, comment only */
{ p++;
if ((' ' == *p) || ('\t' == *p)) p++;
cl->comment = p;
for (s = cl->comment;; s++) /* filter out any EOS characters in comment */
{ if ('\n' == *s) *s = 0;
if (0 == *s) break;
}
return(NGP_OK);
}
cl->format = NGP_FORMAT_ERROR;
return(NGP_OK); /* too many tokens ... */
}
/* try to open include file. If open fails and fname
does not specify absolute pathname, try to open fname
in any directory specified in CFITSIO_INCLUDE_FILES
environment variable. Finally try to open fname
relative to ngp_master_dir, which is directory of top
level include file
*/
int ngp_include_file(char *fname) /* try to open include file */
{ char *p, *p2, *cp, *envar, envfiles[NGP_MAX_ENVFILES];
char *saveptr;
if (NULL == fname) return(NGP_NUL_PTR);
if (ngp_inclevel >= NGP_MAX_INCLUDE) /* too many include files */
return(NGP_INC_NESTING);
if (NULL == (ngp_fp[ngp_inclevel] = fopen(fname, "r")))
{ /* if simple open failed .. */
envar = getenv("CFITSIO_INCLUDE_FILES"); /* scan env. variable, and retry to open */
if (NULL != envar) /* is env. variable defined ? */
{ strncpy(envfiles, envar, NGP_MAX_ENVFILES - 1);
envfiles[NGP_MAX_ENVFILES - 1] = 0; /* copy search path to local variable, env. is fragile */
for (p2 = ffstrtok(envfiles, ":",&saveptr); NULL != p2; p2 = ffstrtok(NULL, ":",&saveptr))
{
cp = (char *)ngp_alloc(strlen(fname) + strlen(p2) + 2);
if (NULL == cp) return(NGP_NO_MEMORY);
strcpy(cp, p2);
#ifdef MSDOS
strcat(cp, "\\"); /* abs. pathname for MSDOS */
#else
strcat(cp, "/"); /* and for unix */
#endif
strcat(cp, fname);
ngp_fp[ngp_inclevel] = fopen(cp, "r");
ngp_free(cp);
if (NULL != ngp_fp[ngp_inclevel]) break;
}
}
if (NULL == ngp_fp[ngp_inclevel]) /* finally try to open relative to top level */
{
#ifdef MSDOS
if ('\\' == fname[0]) return(NGP_ERR_FOPEN); /* abs. pathname for MSDOS, does not support C:\\PATH */
#else
if ('/' == fname[0]) return(NGP_ERR_FOPEN); /* and for unix */
#endif
if (0 == ngp_master_dir[0]) return(NGP_ERR_FOPEN);
p = ngp_alloc(strlen(fname) + strlen(ngp_master_dir) + 1);
if (NULL == p) return(NGP_NO_MEMORY);
strcpy(p, ngp_master_dir); /* construct composite pathname */
strcat(p, fname); /* comp = master + fname */
ngp_fp[ngp_inclevel] = fopen(p, "r");/* try to open composite */
ngp_free(p); /* we don't need buffer anymore */
if (NULL == ngp_fp[ngp_inclevel])
return(NGP_ERR_FOPEN); /* fail if error */
}
}
ngp_inclevel++;
return(NGP_OK);
}
/* read line in the intelligent way. All \INCLUDE directives are handled,
empty and comment line skipped. If this function returns NGP_OK, than
decomposed line (name, type, value in proper type and comment) are
stored in ngp_linkey structure. ignore_blank_lines parameter is zero
when parser is inside GROUP or HDU definition. Nonzero otherwise.
*/
int ngp_read_line(int ignore_blank_lines)
{ int r, nc, savec;
unsigned k;
if (ngp_inclevel <= 0) /* do some sanity checking first */
{ ngp_keyidx = NGP_TOKEN_EOF; /* no parents, so report error */
return(NGP_OK);
}
if (ngp_inclevel > NGP_MAX_INCLUDE) return(NGP_INC_NESTING);
if (NULL == ngp_fp[ngp_inclevel - 1]) return(NGP_NUL_PTR);
for (;;)
{ switch (r = ngp_read_line_buffered(ngp_fp[ngp_inclevel - 1]))
{ case NGP_EOF:
ngp_inclevel--; /* end of file, revert to parent */
if (ngp_fp[ngp_inclevel]) /* we can close old file */
fclose(ngp_fp[ngp_inclevel]);
ngp_fp[ngp_inclevel] = NULL;
if (ngp_inclevel <= 0)
{ ngp_keyidx = NGP_TOKEN_EOF; /* no parents, so report error */
return(NGP_OK);
}
continue;
case NGP_OK:
if (ngp_curline.flags & NGP_LINE_REREAD) return(r);
break;
default:
return(r);
}
switch (ngp_curline.line[0])
{ case 0: if (0 == ignore_blank_lines) break; /* ignore empty lines if told so */
case '#': continue; /* ignore comment lines */
}
r = ngp_extract_tokens(&ngp_curline); /* analyse line, extract tokens and comment */
if (NGP_OK != r) return(r);
if (NULL == ngp_curline.name) continue; /* skip lines consisting only of whitespaces */
for (k = 0; k < strlen(ngp_curline.name); k++)
{ if ((ngp_curline.name[k] >= 'a') && (ngp_curline.name[k] <= 'z'))
ngp_curline.name[k] += 'A' - 'a'; /* force keyword to be upper case */
if (k == 7) break; /* only first 8 chars are required to be upper case */
}
for (k=0;; k++) /* find index of keyword in keyword table */
{ if (NGP_TOKEN_UNKNOWN == ngp_tkdef[k].code) break;
if (0 == strcmp(ngp_curline.name, ngp_tkdef[k].name)) break;
}
ngp_keyidx = ngp_tkdef[k].code; /* save this index, grammar parser will need this */
if (NGP_TOKEN_INCLUDE == ngp_keyidx) /* if this is \INCLUDE keyword, try to include file */
{ if (NGP_OK != (r = ngp_include_file(ngp_curline.value))) return(r);
continue; /* and read next line */
}
ngp_linkey.type = NGP_TTYPE_UNKNOWN; /* now, get the keyword type, it's a long story ... */
if (NULL != ngp_curline.value) /* if no value given signal it */
{ if (NGP_TTYPE_STRING == ngp_curline.type) /* string type test */
{ ngp_linkey.type = NGP_TTYPE_STRING;
ngp_linkey.value.s = ngp_curline.value;
}
if (NGP_TTYPE_UNKNOWN == ngp_linkey.type) /* bool type test */
{ if ((!fits_strcasecmp("T", ngp_curline.value)) || (!fits_strcasecmp("F", ngp_curline.value)))
{ ngp_linkey.type = NGP_TTYPE_BOOL;
ngp_linkey.value.b = (fits_strcasecmp("T", ngp_curline.value) ? 0 : 1);
}
}
if (NGP_TTYPE_UNKNOWN == ngp_linkey.type) /* complex type test */
{ if (2 == sscanf(ngp_curline.value, "(%lg,%lg)%n", &(ngp_linkey.value.c.re), &(ngp_linkey.value.c.im), &nc))
{ if ((' ' == ngp_curline.value[nc]) || ('\t' == ngp_curline.value[nc])
|| ('\n' == ngp_curline.value[nc]) || (0 == ngp_curline.value[nc]))
{ ngp_linkey.type = NGP_TTYPE_COMPLEX;
}
}
}
if (NGP_TTYPE_UNKNOWN == ngp_linkey.type) /* real type test */
{ if (strchr(ngp_curline.value, '.') && (1 == sscanf(ngp_curline.value, "%lg%n", &(ngp_linkey.value.d), &nc)))
{
if ('D' == ngp_curline.value[nc]) {
/* test if template used a 'D' rather than an 'E' as the exponent character (added by WDP in 12/2010) */
savec = nc;
ngp_curline.value[nc] = 'E';
sscanf(ngp_curline.value, "%lg%n", &(ngp_linkey.value.d), &nc);
if ((' ' == ngp_curline.value[nc]) || ('\t' == ngp_curline.value[nc])
|| ('\n' == ngp_curline.value[nc]) || (0 == ngp_curline.value[nc])) {
ngp_linkey.type = NGP_TTYPE_REAL;
} else { /* no, this is not a real value */
ngp_curline.value[savec] = 'D'; /* restore the original D character */
}
} else {
if ((' ' == ngp_curline.value[nc]) || ('\t' == ngp_curline.value[nc])
|| ('\n' == ngp_curline.value[nc]) || (0 == ngp_curline.value[nc]))
{ ngp_linkey.type = NGP_TTYPE_REAL;
}
}
}
}
if (NGP_TTYPE_UNKNOWN == ngp_linkey.type) /* integer type test */
{ if (1 == sscanf(ngp_curline.value, "%d%n", &(ngp_linkey.value.i), &nc))
{ if ((' ' == ngp_curline.value[nc]) || ('\t' == ngp_curline.value[nc])
|| ('\n' == ngp_curline.value[nc]) || (0 == ngp_curline.value[nc]))
{ ngp_linkey.type = NGP_TTYPE_INT;
}
}
}
if (NGP_TTYPE_UNKNOWN == ngp_linkey.type) /* force string type */
{ ngp_linkey.type = NGP_TTYPE_STRING;
ngp_linkey.value.s = ngp_curline.value;
}
}
else
{ if (NGP_TTYPE_RAW == ngp_curline.type) ngp_linkey.type = NGP_TTYPE_RAW;
else ngp_linkey.type = NGP_TTYPE_NULL;
}
if (NULL != ngp_curline.comment)
{ strncpy(ngp_linkey.comment, ngp_curline.comment, NGP_MAX_COMMENT); /* store comment */
ngp_linkey.comment[NGP_MAX_COMMENT - 1] = 0;
}
else
{ ngp_linkey.comment[0] = 0;
}
strncpy(ngp_linkey.name, ngp_curline.name, NGP_MAX_NAME); /* and keyword's name */
ngp_linkey.name[NGP_MAX_NAME - 1] = 0;
if (strlen(ngp_linkey.name) > FLEN_KEYWORD) /* WDP: 20-Jun-2002: mod to support HIERARCH */
{
return(NGP_BAD_ARG); /* cfitsio does not allow names > 8 chars */
}
return(NGP_OK); /* we have valid non empty line, so return success */
}
}
/* check whether keyword can be written as is */
int ngp_keyword_is_write(NGP_TOKEN *ngp_tok)
{ int i, j, l, spc;
/* indexed variables not to write */
static char *nm[] = { "NAXIS", "TFORM", "TTYPE", NULL } ;
/* non indexed variables not allowed to write */
static char *nmni[] = { "SIMPLE", "XTENSION", "BITPIX", "NAXIS", "PCOUNT",
"GCOUNT", "TFIELDS", "THEAP", "EXTEND", "EXTVER",
NULL } ;
if (NULL == ngp_tok) return(NGP_NUL_PTR);
for (j = 0; ; j++) /* first check non indexed */
{ if (NULL == nmni[j]) break;
if (0 == strcmp(nmni[j], ngp_tok->name)) return(NGP_BAD_ARG);
}
for (j = 0; ; j++) /* now check indexed */
{ if (NULL == nm[j]) return(NGP_OK);
l = strlen(nm[j]);
if ((l < 1) || (l > 5)) continue;
if (0 == strncmp(nm[j], ngp_tok->name, l)) break;
}
if ((ngp_tok->name[l] < '1') || (ngp_tok->name[l] > '9')) return(NGP_OK);
spc = 0;
for (i = l + 1; i < 8; i++)
{ if (spc) { if (' ' != ngp_tok->name[i]) return(NGP_OK); }
else
{ if ((ngp_tok->name[i] >= '0') && (ngp_tok->name[i] <= '9')) continue;
if (' ' == ngp_tok->name[i]) { spc = 1; continue; }
if (0 == ngp_tok->name[i]) break;
return(NGP_OK);
}
}
return(NGP_BAD_ARG);
}
/* write (almost) all keywords from given HDU to disk */
int ngp_keyword_all_write(NGP_HDU *ngph, fitsfile *ffp, int mode)
{ int i, r, ib;
char buf[200];
long l;
if (NULL == ngph) return(NGP_NUL_PTR);
if (NULL == ffp) return(NGP_NUL_PTR);
r = NGP_OK;
for (i=0; i<ngph->tokcnt; i++)
{ r = ngp_keyword_is_write(&(ngph->tok[i]));
if ((NGP_REALLY_ALL & mode) || (NGP_OK == r))
{ switch (ngph->tok[i].type)
{ case NGP_TTYPE_BOOL:
ib = ngph->tok[i].value.b;
fits_write_key(ffp, TLOGICAL, ngph->tok[i].name, &ib, ngph->tok[i].comment, &r);
break;
case NGP_TTYPE_STRING:
fits_write_key_longstr(ffp, ngph->tok[i].name, ngph->tok[i].value.s, ngph->tok[i].comment, &r);
break;
case NGP_TTYPE_INT:
l = ngph->tok[i].value.i; /* bugfix - 22-Jan-99, BO - nonalignment of OSF/Alpha */
fits_write_key(ffp, TLONG, ngph->tok[i].name, &l, ngph->tok[i].comment, &r);
break;
case NGP_TTYPE_REAL:
fits_write_key(ffp, TDOUBLE, ngph->tok[i].name, &(ngph->tok[i].value.d), ngph->tok[i].comment, &r);
break;
case NGP_TTYPE_COMPLEX:
fits_write_key(ffp, TDBLCOMPLEX, ngph->tok[i].name, &(ngph->tok[i].value.c), ngph->tok[i].comment, &r);
break;
case NGP_TTYPE_NULL:
fits_write_key_null(ffp, ngph->tok[i].name, ngph->tok[i].comment, &r);
break;
case NGP_TTYPE_RAW:
if (0 == strcmp("HISTORY", ngph->tok[i].name))
{ fits_write_history(ffp, ngph->tok[i].comment, &r);
break;
}
if (0 == strcmp("COMMENT", ngph->tok[i].name))
{ fits_write_comment(ffp, ngph->tok[i].comment, &r);
break;
}
snprintf(buf,200, "%-8.8s%s", ngph->tok[i].name, ngph->tok[i].comment);
fits_write_record(ffp, buf, &r);
break;
}
}
else if (NGP_BAD_ARG == r) /* enhancement 10 dec 2003, James Peachey: template comments replace defaults */
{ r = NGP_OK; /* update comments of special keywords like TFORM */
if (ngph->tok[i].comment && *ngph->tok[i].comment) /* do not update with a blank comment */
{ fits_modify_comment(ffp, ngph->tok[i].name, ngph->tok[i].comment, &r);
}
}
else /* other problem, typically a blank token */
{ r = NGP_OK; /* skip this token, but continue */
}
if (r) return(r);
}
fits_set_hdustruc(ffp, &r); /* resync cfitsio */
return(r);
}
/* init HDU structure */
int ngp_hdu_init(NGP_HDU *ngph)
{ if (NULL == ngph) return(NGP_NUL_PTR);
ngph->tok = NULL;
ngph->tokcnt = 0;
return(NGP_OK);
}
/* clear HDU structure */
int ngp_hdu_clear(NGP_HDU *ngph)
{ int i;
if (NULL == ngph) return(NGP_NUL_PTR);
for (i=0; i<ngph->tokcnt; i++)
{ if (NGP_TTYPE_STRING == ngph->tok[i].type)
if (NULL != ngph->tok[i].value.s)
{ ngp_free(ngph->tok[i].value.s);
ngph->tok[i].value.s = NULL;
}
}
if (NULL != ngph->tok) ngp_free(ngph->tok);
ngph->tok = NULL;
ngph->tokcnt = 0;
return(NGP_OK);
}
/* insert new token to HDU structure */
int ngp_hdu_insert_token(NGP_HDU *ngph, NGP_TOKEN *newtok)
{ NGP_TOKEN *tkp;
if (NULL == ngph) return(NGP_NUL_PTR);
if (NULL == newtok) return(NGP_NUL_PTR);
if (0 == ngph->tokcnt)
tkp = (NGP_TOKEN *)ngp_alloc((ngph->tokcnt + 1) * sizeof(NGP_TOKEN));
else
tkp = (NGP_TOKEN *)ngp_realloc(ngph->tok, (ngph->tokcnt + 1) * sizeof(NGP_TOKEN));
if (NULL == tkp) return(NGP_NO_MEMORY);
ngph->tok = tkp;
ngph->tok[ngph->tokcnt] = *newtok;
if (NGP_TTYPE_STRING == newtok->type)
{ if (NULL != newtok->value.s)
{ ngph->tok[ngph->tokcnt].value.s = (char *)ngp_alloc(1 + strlen(newtok->value.s));
if (NULL == ngph->tok[ngph->tokcnt].value.s) return(NGP_NO_MEMORY);
strcpy(ngph->tok[ngph->tokcnt].value.s, newtok->value.s);
}
}
ngph->tokcnt++;
return(NGP_OK);
}
int ngp_append_columns(fitsfile *ff, NGP_HDU *ngph, int aftercol)
{ int r, i, j, exitflg, ngph_i;
char *my_tform, *my_ttype;
char ngph_ctmp;
if (NULL == ff) return(NGP_NUL_PTR);
if (NULL == ngph) return(NGP_NUL_PTR);
if (0 == ngph->tokcnt) return(NGP_OK); /* nothing to do ! */
r = NGP_OK;
exitflg = 0;
for (j=aftercol; j<NGP_MAX_ARRAY_DIM; j++) /* 0 for table, 6 for group */
{
my_tform = NULL;
my_ttype = "";
for (i=0; ; i++)
{ if (1 == sscanf(ngph->tok[i].name, "TFORM%d%c", &ngph_i, &ngph_ctmp))
{ if ((NGP_TTYPE_STRING == ngph->tok[i].type) && (ngph_i == (j + 1)))
{ my_tform = ngph->tok[i].value.s;
}
}
else if (1 == sscanf(ngph->tok[i].name, "TTYPE%d%c", &ngph_i, &ngph_ctmp))
{ if ((NGP_TTYPE_STRING == ngph->tok[i].type) && (ngph_i == (j + 1)))
{ my_ttype = ngph->tok[i].value.s;
}
}
if ((NULL != my_tform) && (my_ttype[0])) break;
if (i < (ngph->tokcnt - 1)) continue;
exitflg = 1;
break;
}
if ((NGP_OK == r) && (NULL != my_tform))
fits_insert_col(ff, j + 1, my_ttype, my_tform, &r);
if ((NGP_OK != r) || exitflg) break;
}
return(r);
}
/* read complete HDU */
int ngp_read_xtension(fitsfile *ff, int parent_hn, int simple_mode)
{ int r, exflg, l, my_hn, tmp0, incrementor_index, i, j;
int ngph_dim, ngph_bitpix, ngph_node_type, my_version;
char incrementor_name[NGP_MAX_STRING], ngph_ctmp;
char *ngph_extname = 0;
long ngph_size[NGP_MAX_ARRAY_DIM];
NGP_HDU ngph;
long lv;
incrementor_name[0] = 0; /* signal no keyword+'#' found yet */
incrementor_index = 0;
if (NGP_OK != (r = ngp_hdu_init(&ngph))) return(r);
if (NGP_OK != (r = ngp_read_line(0))) return(r); /* EOF always means error here */
switch (NGP_XTENSION_SIMPLE & simple_mode)
{
case 0: if (NGP_TOKEN_XTENSION != ngp_keyidx) return(NGP_TOKEN_NOT_EXPECT);
break;
default: if (NGP_TOKEN_SIMPLE != ngp_keyidx) return(NGP_TOKEN_NOT_EXPECT);
break;
}
if (NGP_OK != (r = ngp_hdu_insert_token(&ngph, &ngp_linkey))) return(r);
for (;;)
{ if (NGP_OK != (r = ngp_read_line(0))) return(r); /* EOF always means error here */
exflg = 0;
switch (ngp_keyidx)
{
case NGP_TOKEN_SIMPLE:
r = NGP_TOKEN_NOT_EXPECT;
break;
case NGP_TOKEN_END:
case NGP_TOKEN_XTENSION:
case NGP_TOKEN_GROUP:
r = ngp_unread_line(); /* WARNING - not break here .... */
case NGP_TOKEN_EOF:
exflg = 1;
break;
default: l = strlen(ngp_linkey.name);
if ((l >= 2) && (l <= 6))
{ if ('#' == ngp_linkey.name[l - 1])
{ if (0 == incrementor_name[0])
{ memcpy(incrementor_name, ngp_linkey.name, l - 1);
incrementor_name[l - 1] = 0;
}
if (((l - 1) == (int)strlen(incrementor_name)) && (0 == memcmp(incrementor_name, ngp_linkey.name, l - 1)))
{ incrementor_index++;
}
snprintf(ngp_linkey.name + l - 1, NGP_MAX_NAME-l+1,"%d", incrementor_index);