diff options
Diffstat (limited to 'filter/filtprog_c.c')
| -rw-r--r-- | filter/filtprog_c.c | 1033 |
1 files changed, 1033 insertions, 0 deletions
diff --git a/filter/filtprog_c.c b/filter/filtprog_c.c new file mode 100644 index 0000000..dbebd60 --- /dev/null +++ b/filter/filtprog_c.c @@ -0,0 +1,1033 @@ +/* + * Copyright (c) 1999-2003 Smithsonian Astrophysical Observatory + */ + +/* + * + * filtprog_c.c -- support for filters using the C compiler + * + */ + +#include <filter.h> +#include <swap.h> +#include <regions_h.h> +#include <events_c.h> +#include <image_c.h> +#include <evregions_c.h> +#include <imregions_c.h> +#include <xalloc_c.h> +#include <swap_c.h> + +/* + * + * Private Routines + * + */ + +#ifdef ANSI_FUNC +static char * +GetType(int t) +#else +static char *GetType(t) + int t; +#endif +{ + switch(t){ + case 'A': + return("char"); + case 'B': + return("unsigned char"); + case 'I': + return("short"); + case 'U': + return("unsigned short"); + case 'J': + return("int"); + case 'V': + return("unsigned int"); + case 'K': + return("long long"); + case 'E': + return("float"); + case 'D': + return("double"); + case 'X': + return("char"); + case 'L': + return("char"); + default: + return("char"); + } +} + +#ifdef ANSI_FUNC +static double +GetTloff(int t) +#else +static double GetTloff(t) + int t; +#endif +{ + switch(t){ + case 'B': + case 'I': + case 'U': + case 'J': + case 'V': + case 'K': + case 'X': + return 1.0; + case 'E': + case 'D': + return 0.5; + default: + return 1.0; + } +} + +#ifdef ANSI_FUNC +static char * +_FilterInitString(char *filtstr) +#else +static char *_FilterInitString(filtstr) + char *filtstr; +#endif +{ + char *ibuf, *iptr, *fptr; + char *s, *t; + int paren=0; + + ibuf = xcalloc(strlen(filtstr)*10, sizeof(char)); + /* make sure we have at least one shape */ + if( !FilterShapeCount() ) + return ibuf; + iptr = ibuf; + fptr = filtstr; + while( *fptr ){ + /* look for beginning of region routine */ + if( !(s=strstr(fptr, "im")) && !(s=strstr(fptr, "ev")) ) + break; + t = s+2; + if( !*t ) + break; + /* which is followed by a region and open paren */ + if( strncmp(t, "annulus(", 8) && + strncmp(t, "box(", 4) && + strncmp(t, "circle(", 7) && + strncmp(t, "ellipse(", 8) && + strncmp(t, "line(", 5) && + strncmp(t, "panda(", 6) && + strncmp(t, "bpanda(", 7) && + strncmp(t, "cpanda(", 7) && + strncmp(t, "epanda(", 7) && + strncmp(t, "pie(", 4) && + strncmp(t, "qtpie(", 6) && + strncmp(t, "point(", 6) && + strncmp(t, "nannulus(", 9) && + strncmp(t, "nbox(", 5) && + strncmp(t, "ncircle(", 8) && + strncmp(t, "nellipse(", 9) && + strncmp(t, "npie(", 5) && + strncmp(t, "vannulus(", 9) && + strncmp(t, "vbox(", 5) && + strncmp(t, "vcircle(", 8) && + strncmp(t, "vellipse(", 9) && + strncmp(t, "vpie(", 5) && + strncmp(t, "vpoint(", 7) && + strncmp(t, "polygon(", 8) && + strncmp(t, "field(", 6) && + strncmp(t, "imagemask(", 10) ){ + fptr = t; + continue; + } + /* copy region name up to open paren */ + for(fptr=s; *fptr && *fptr!='('; fptr++){ + *iptr++ = *fptr; + } + /* append init suffix */ + *iptr++ = 'i'; + /* copy the paren */ + if( *fptr == '(' ){ + *iptr++ = *fptr++; + paren++; + } + /* copy til end of region, i.e., when paren goes to 0 */ + while( *fptr && paren ){ + if( *fptr == '(' ) + paren++; + if( *fptr == ')' ) + paren--; + *iptr++ = *fptr++; + } + /* copy ';' */ + *iptr++ = ';'; + } + return(ibuf); +} + +/* + * + * FilterProgOpen_C -- return filter program as a file for writing + * + */ +#ifdef ANSI_FUNC +static int +FilterProgOpen_C (Filter filter) +#else +static int FilterProgOpen_C(filter) + Filter filter; +#endif +{ + int fd; + char *ccstr=NULL; + char prefix[SZ_LINE]; + char tbuf[SZ_LINE]; + char *tmpdir=NULL; +#if HAVE_CYGWIN + char *s; +#endif + + /* make sure we have something to work with */ + if( !filter ) + return(0); + + /* see if the user specified a compiler explicitly */ + if( !(ccstr = getenv("FILTER_CC")) && + !(ccstr = getenv("CC")) && + !(ccstr = FILTER_CC) ){ + ccstr = "gcc"; + } + /* make sure we have a compiler */ + if( !(filter->cc = Access(ccstr, "x")) && + !(filter->cc = Find(ccstr, "x", NULL, FilterPath())) && + !(filter->cc = Find("gcc", "x", NULL, FilterPath())) && + !(filter->cc = Find("cc", "x", NULL, FilterPath())) && + !(filter->cc = Find("cc", "x", NULL, ".")) && + !(filter->cc = Find("cc", "x", NULL, CC_PATH)) ){ + gerror(stderr, "no compiler found for filter compilation\n"); + return(0); + } + + /* determine whether communication is via Unix pipes or Win32 pipes */ + filter->pipeos = PIPE_UNIX; +#if HAVE_MINGW32 + filter->pipeos = PIPE_WIN32; +#endif +#if HAVE_CYGWIN + if( (s=strrchr(filter->cc, '/')) ){ + s++; + } + else if( (s=strrchr(filter->cc, '\\')) ){ + s++; + } else { + s = filter->cc; + } + if( !strcasecmp(s, "tcc") || !strcasecmp(s, "tcc.exe") || + !strcasecmp(s, "pcc") || !strcasecmp(s, "pcc.exe") ){ + filter->pipeos = PIPE_WIN32; + } +#endif + + /* final check on ptype: if we wanted dynamic but had no gcc, use process */ + if( (filter->ptype == PTYPE_DYNAMIC) && !strstr(filter->cc, "gcc") ) + filter->ptype = PTYPE_PROCESS; + /* get default file names */ + snprintf(tbuf, SZ_LINE, "$FILTER_OBJDIR:$FILTER_LIBDIR:%s:$HOME/.funtools:$SAORD_ROOT/lib:/usr/lib:/usr/local/lib:/opt/local/lib", OBJPATH); + switch( filter->type ){ + case TYPE_EVENTS: + /* normally, we filter events analytically */ + if( !filter->evsect ) + /* filter->objs = Find("evregions.o", "r", NULL, tbuf); */ + filter->objs = Find("libfuntools.a", "r", NULL, tbuf); + /* if evsect=xxx is specified, we filter by image pixels */ + else + /* filter->objs = Find("imregions.o", "r", NULL, tbuf); */ + filter->objs = Find("libfuntools.a", "r", NULL, tbuf); + break; + case TYPE_IMAGE: + /* image are filtered by image pixels */ + /* filter->objs = Find("imregions.o", "r", NULL, tbuf); */ + filter->objs = Find("libfuntools.a", "r", NULL, tbuf); + break; + } + /* if we wanted to a process, but have no objects, use self-contained */ + if( (filter->ptype == PTYPE_PROCESS) && !filter->objs ) + filter->ptype = PTYPE_CONTAINED; + /* allow extra stuff on the command line */ + if( !(filter->cflags = xstrdup(getenv("FILTER_CFLAGS"))) && + !(filter->cflags = xstrdup(FILTER_CFLAGS)) ) + filter->cflags = xstrdup(" "); + if( !(filter->extra = xstrdup(getenv("FILTER_EXTRA"))) ) + filter->extra = xstrdup(" "); + /* set shared switches for gcc */ + if( strstr(filter->cc, "gcc") ) + filter->shflags = xstrdup(GCC_SHARED_FLAGS); + + /* get prefix for filter source and program */ + if( !(tmpdir = (char *)getenv("FILTER_TMPDIR")) && + !(tmpdir = (char *)getenv("TMPDIR")) && + !(tmpdir = (char *)getenv("TMP")) ) + tmpdir = DEFAULT_FILTER_TMPDIR; + if( !*tmpdir ) + tmpdir = "."; +#if HAVE_MINGW32 + snprintf(prefix, SZ_LINE, "%s\\f", tmpdir); +#else + snprintf(prefix, SZ_LINE, "%s/f", tmpdir); +#endif + + /* make up the routine name when we dynamically load */ + snprintf(tbuf, SZ_LINE, "Filter%d%d", (int)getpid(), FilterNum()); + filter->pname = xstrdup(tbuf); + + /* make up name of C source file we will generate */ + if( filter->debug >= 2 ){ + filter->fp = stdout; + return(1); + } + else{ + if( (fd=mkrtemp(prefix, ".c", tbuf, SZ_LINE, 1)) < 0 ){ + gerror(stderr, "could not generate C filter source name: %s\n", + prefix); + return(0); + } + filter->code = xstrdup(tbuf); + if( !(filter->fp = fdopen(fd, "w+b")) ){ + gerror(stderr, "could not open C filter source file: %s\n", + tbuf); + return(0); + } + } + + /* make up the name of the program we will compile into. + we make this different from the .c file name to make interception + by an intruder harder */ + if( mkrtemp(prefix, NULL, tbuf, SZ_LINE, 0) < 0 ){ + gerror(stderr, "could not generate C filter program name: %s\n", + prefix); + return(0); + } +#if HAVE_MINGW32 + strcat(tbuf, ".exe"); +#endif + filter->prog = xstrdup(tbuf); + return(1); +} + +/* + * + * FilterProgPrepend_C -- prepend the filter code + * + */ +#ifdef ANSI_FUNC +static int +FilterProgPrepend_C (Filter filter) +#else +static int FilterProgPrepend_C(filter) + Filter filter; +#endif +{ + char *s=NULL; + char *contents=NULL; + FILE *fd; + + /* make sure we have something to work with */ + if( !filter ) + return(0); + + /* make sure we are not in debug mode */ + if( filter->debug >= 2 ) + return(1); + + /* init temps */ + fd = filter->fp; + + /* initialize with process type */ + switch(filter->ptype){ + case PTYPE_CONTAINED: + fprintf(fd, "#define FILTER_PTYPE c\n"); + break; + case PTYPE_DYNAMIC: + fprintf(fd, "#define FILTER_PTYPE d\n"); + break; + case PTYPE_PROCESS: + fprintf(fd, "#define FILTER_PTYPE p\n"); + break; + } + + /* we want the byte order up at the top */ + if( is_bigendian() ){ + fprintf(fd, "#define MYBYTE_ORDER 4321\n"); + } + else{ + fprintf(fd, "#define MYBYTE_ORDER 1234\n"); + } + + /* for some compilers (e.g. pcc), we need to minimize use of #include */ + if( (s=strrchr(filter->cc, '/')) ){ + s++; + } else { + s = filter->cc; + } + if( !strcasecmp(s, "pcc") || !strcasecmp(s, "pcc.exe") ){ + fprintf(fd, "#define MINIMIZE_INCLUDES 1\n"); + } + + /* do we need windows pipes? */ + if( filter->pipeos == PIPE_WIN32 ){ + fprintf(fd, "#define USE_WIN32 1\n"); + fprintf(fd, "#include <windows.h>\n"); + } + + + /* prepend the filter header */ + contents = REGIONS_H; + if( (contents != NULL) && (*contents != '\0') ){ + fprintf(fd, "%s\n", contents); + } + + /* these are implemented as aliases */ + fprintf(fd, "#define evvcircle evvannulus\n"); + fprintf(fd, "#define evncircle evnannulus\n"); + fprintf(fd, "#define imvcirclei imvannulusi\n"); + fprintf(fd, "#define imncirclei imnannulusi\n"); + fprintf(fd, "#define imvcircle imvannulus\n"); + fprintf(fd, "#define imncircle imnannulus\n"); + fprintf(fd, "#define evcpanda evpanda\n"); + fprintf(fd, "#define imcpandai impandai\n"); + fprintf(fd, "#define imcpanda impanda\n"); + fprintf(fd, "\n"); + + /* add some math support */ + if( is_bigendian() ){ + fprintf(fd, "static unsigned char _nan[8]={0x7F,0xF0,1,1,1,1,1,1};\n"); + } + else{ + fprintf(fd, "static unsigned char _nan[8]={1,1,1,1,1,1,0xF0,0x7F};\n"); + } + fprintf(fd, "#define NaN *((double *)_nan)\n"); + fprintf(fd, "#define div(a,b) (feq(b,0)?(NaN):(a/b))\n"); + fprintf(fd, "\n"); + return(1); +} + +/* + * + * FilterProgWrite_C -- write the symbols for filtering + * + */ +#ifdef ANSI_FUNC +static int +FilterProgWrite_C(Filter filter) +#else +static int FilterProgWrite_C(filter) + Filter filter; +#endif +{ + int i; + int offset; + int pad; + int dsize; + int evsize; + int tltyps[2]; + double tlmins[2]; + double binsizs[2]; + char vbuf[1024]; + char *s, *t; + char *v; + char *ibuf; + char *filtstr; + char *contents=NULL; + char tbuf[SZ_LINE]; + FILE *fd; + FilterSymbols sp; + FITSHead fhd; + + /* make sure we have something to work with */ + if( !filter ) + return(0); + + /* make sure we are init'ed */ + if( filter->fhd == NULL ){ + gerror(stderr, "symbol table not initialized\n"); + return(0); + } + + /* make sure we are init'ed */ + if( filter->fp == NULL ){ + gerror(stderr, "no output file for parser\n"); + return(0); + } + + /* get the filter string */ + if( !(filtstr = (char *)_FilterString()) || !strcmp(filtstr, "()") ){ + return(0); + } + + /* init temps */ + fhd = filter->fhd; + fd= filter->fp; + offset = 0; + evsize = 0; + + /* ptype-specific processing */ + switch(filter->ptype){ + case PTYPE_CONTAINED: + /* Write code to output file -- must be done BEFORE we write the + region symbols, to avoid unintentional redefinitions */ + if( filter->debug < 2 ){ + /* we need the xalloc routines */ + contents = XALLOC_C; + if( (contents != NULL) && (*contents != '\0') ){ + fprintf(fd, "%s\n", contents); + } + /* region routines if not linking against previously compiled code */ + switch( filter->type ){ + case TYPE_EVENTS: + /* normally, we filter events analytically using evregions.o */ + if( !filter->evsect ) + contents = EVREGIONS_C; + /* if evsect=xxx is specified, we filter by image pixels */ + else + contents = IMREGIONS_C; + break; + case TYPE_IMAGE: + /* image are filtered by image pixels */ + contents = IMREGIONS_C; + break; + default: + break; + } + if( (contents != NULL) && (*contents != '\0') ){ + /* use fprintf so that we handle \n correctly in TEMPLATE */ + fprintf(fd, "%s\n", contents); + } + else{ + gerror(stderr, "could not write filter subroutines\n"); + return(0); + } + } + break; + } + + /* always need the swap routines (they're part of the filter) */ + contents = SWAP_C; + if( (contents != NULL) && (*contents != '\0') ){ + fprintf(fd, "%s\n", contents); + } + + /* output counts of shapes */ + fprintf(fd, "#define NSHAPE %d\n", + FilterShapeCount()); + fprintf(fd, "#define NREGION %d\n", + FilterRegionCount(TOK_IREG|TOK_EREG|TOK_NREG)); + /* output the filter itself */ + fprintf(fd, "#define FILTER %s\n", filtstr); + if( filter->debug < 2 ){ + /* string version of the filter -- used to check for FIELD optimization */ + fprintf(fd, "#define FILTSTR \"%s\"\n", filtstr); + /* output the initialization string */ + ibuf = _FilterInitString(filtstr); + fprintf(fd, "#define FINIT %s\n", (ibuf && *ibuf)?ibuf:""); + if( ibuf ) xfree(ibuf); + } + + /* for type image, we generate an initialization string */ + switch(filter->type){ + case TYPE_IMAGE: + fprintf(fd, "#define IMFILTRTN %s\n", filter->pname); + break; + case TYPE_EVENTS: + fprintf(fd, "#define EVFILTRTN %s\n", filter->pname); + /* output the event section and tlmin values, if necessary */ + if( filter->evsect && FilterTlInfo(tlmins,binsizs,tltyps) ){ + if( *filter->evsect == '"' ) + fprintf(fd, "#define EVSECT %s\n", filter->evsect); + else + fprintf(fd, "#define EVSECT \"%s\"\n", filter->evsect); + fprintf(fd, "#define TLMINX %f\n", tlmins[0]); + fprintf(fd, "#define TLMINY %f\n", tlmins[1]); + for(i=0; i<2; i++) + if( binsizs[i] <= 0.0 ) binsizs[i] = 1.0; + if( (binsizs[0] == 1.0) && (binsizs[1] == 1.0) ) + fprintf(fd, "#define USEBINSIZ 0\n"); + else + fprintf(fd, "#define USEBINSIZ 1\n"); + fprintf(fd, "#define BINSIZX %f\n", binsizs[0]); + fprintf(fd, "#define BINSIZY %f\n", binsizs[1]); + fprintf(fd, "#define TLOFF %f\n", GetTloff(tltyps[0])); + fprintf(fd, "#define TLOFF %f\n", GetTloff(tltyps[1])); + } + /* loop through the symbol table and process #defines */ + for(i=0; i<filter->nsyms; i++){ + sp = &(filter->symtab[i]); + /* skip accidentally empty ones */ + if( (sp->name == NULL) || (*sp->name == '\0') ) + continue; + /* process this type of symbol */ + switch(sp->type){ + case SYM_COL: + /* make sure we are aligned */ + if( fhd->table->col[sp->idx].type == 'X' ){ + switch(fhd->table->col[sp->idx].n){ + case 8: + dsize = 1; + break; + case 16: + dsize = 2; + break; + case 32: + dsize = 4; + break; + default: + dsize = ft_sizeof(filter->fhd->table->col[sp->idx].type); + } + } + else{ + dsize = ft_sizeof(filter->fhd->table->col[sp->idx].type); + } + pad = dsize - (offset % dsize); + if( pad == dsize ) pad = 0; + offset += pad; + evsize += pad; + sp->offset = offset; + if( fhd->table->col[sp->idx].scaled ){ + snprintf(tbuf, SZ_LINE, "(%f+%f*(", + fhd->table->col[sp->idx].zero, + fhd->table->col[sp->idx].scale); + s = tbuf; + t = "))"; + } + else{ + s = ""; + t = ""; + } + if( fhd->table->col[sp->idx].n == 1 ){ + fprintf(fd, "#define %s %s*((%s *)(SW%d(eptr+%d,%d,_swf,%d)))%s\n", + sp->name, + s, + GetType((int)fhd->table->col[sp->idx].type), + dsize, + offset, + dsize, + offset, + t); + } + else{ + if( fhd->table->col[sp->idx].type == 'X' ){ + switch(fhd->table->col[sp->idx].n){ + case 8: + fprintf(fd, "#define %s %s*((%s *)(eptr+%d))%s\n", + sp->name, s, "unsigned char", offset, t); + break; + case 16: + fprintf(fd, "#define %s %s*((%s *)(SW2(eptr+%d,%d,_swf,%d)))%s\n", + sp->name, s, "unsigned short", offset, 2, offset, t); + break; + case 32: + fprintf(fd, "#define %s %s*((%s *)(SW4(eptr+%d,%d,_swf,%d)))%s\n", + sp->name, s, "unsigned int", offset, 4, offset, t); + break; + default: + fprintf(fd, "#define %s %s((%s *)(SW%d(eptr+%d,%d,_swf,%d)))%s\n", + sp->name, + s, + GetType((int)fhd->table->col[sp->idx].type), + dsize, + offset, + dsize, + offset, + t); + } + } + else if( fhd->table->col[sp->idx].type == 'A' ){ + fprintf(fd, "#define %s acopy(eptr+%d,%d)\n", + sp->name, + offset, + fhd->table->col[sp->idx].n); + } + else{ + fprintf(fd, "#define %s %s((%s *)(SW%d(eptr+%d,%d,_swf,%d)))%s\n", + sp->name, + s, + GetType((int)fhd->table->col[sp->idx].type), + dsize, + offset, + dsize, + offset, + t); + } + } + /* lower and upper case are both acceptable */ + strcpy(vbuf, sp->name); + cluc(vbuf); + if( strcmp(vbuf, sp->name) ){ + fprintf(fd, "#define %s %s\n", vbuf, sp->name); + } + culc(vbuf); + if( strcmp(vbuf, sp->name) ){ + fprintf(fd, "#define %s %s\n", vbuf, sp->name); + } + /* bump pointers */ + if( fhd->table->col[sp->idx].type == 'X' ){ + offset += + ((fhd->table->col[sp->idx].size*fhd->table->col[sp->idx].n)+7)/8; + evsize += + ((fhd->table->col[sp->idx].size*fhd->table->col[sp->idx].n)+7)/8; + } + else{ + offset += fhd->table->col[sp->idx].size*fhd->table->col[sp->idx].n; + evsize += fhd->table->col[sp->idx].size*fhd->table->col[sp->idx].n; + } + break; + case SYM_PAR: + /* we have to distinguish between numbers and strings here */ + /* strip off enclosing white space */ + (void)nowhite(sp->value, vbuf); + /* check for all white space */ + if( *vbuf == '\0' ){ + fprintf(fd, "#define %s \"\"\n", sp->name); + } + else{ + /* see if its a pure number */ + (void)strtod(vbuf, &v); + if( (v == NULL) || (*v == '\0') ) + fprintf(fd, "#define %s %s\n", sp->name, vbuf); + else + fprintf(fd, "#define %s \"%s\"\n", sp->name, vbuf); + } + break; + } + } + /* make sure each record is aligned */ + pad = 8 - (evsize % 8); + if( pad == 8 ) pad = 0; + evsize += pad; + /* make sure we have at least one byte to send to co-process */ + if( evsize <=0 ) evsize = 1; + /* output the size of the filter record */ + fprintf(fd, "#define EVSIZE %d\n", evsize); + fprintf(fd, "static char _swf[%d];\n", evsize); + /* save for later use */ + filter->evsize = evsize; + break; + default: + break; + } + + /* write out the mask structure */ + if( filter->nmask && filter->masks && + (filter->type == TYPE_EVENTS) && filter->evsect ){ + fprintf(fd, "#define NMASK %d\n", filter->nmask); + fprintf(fd, "#define MASKDIM %d;\n", ft_naxis(filter->maskhd, 1)); + fprintf(fd, "static FilterMaskRec _masks[]={\n"); + /* copy all masks and translate x,y positions as needed */ + for(i=0; i<filter->nmask; i++){ + fprintf(fd, "{%d,%d,%d,%d}", + filter->masks[i].region, + filter->masks[i].y, + filter->masks[i].xstart, + filter->masks[i].xstop); + if( i != (filter->nmask -1) ) + fprintf(fd, ","); + fprintf(fd, "\n"); + } + fprintf(fd, "};\n"); + } + else{ + fprintf(fd, "#define NMASK 0\n"); + fprintf(fd, "#define MASKDIM 0;\n"); + fprintf(fd, "static FilterMask _masks=NULL;\n"); + } + + /* write it now */ + fflush(fd); + return(1); +} + +/* + * + * FilterProgAppend_C -- append the filter program body + * + */ +#ifdef ANSI_FUNC +static int +FilterProgAppend_C (Filter filter) +#else +static int FilterProgAppend_C(filter) + Filter filter; +#endif +{ + char *contents=NULL; + + /* make sure we have something to work with */ + if( !filter ) + return(0); + + /* make sure we are not in debug mode */ + if( filter->debug >= 2 ) + return(1); + + /* get body of filter program */ + switch( filter->type ){ + case TYPE_EVENTS: + contents = EVENTS_C; + break; + case TYPE_IMAGE: + contents = IMAGE_C; + break; + } + if( (contents != NULL) && (*contents != '\0') ){ + /* use fprintf so that we handle \n correctly in TEMPLATE */ + fprintf(filter->fp, "%s\n", contents); + return(1); + } + else{ + gerror(stderr, "could not write body of filter program\n"); + return(0); + } +} + +/* + * + * FilterProgClose_C -- close the filter program file + * + */ +#ifdef ANSI_FUNC +static int +FilterProgClose_C (Filter filter) +#else +static int FilterProgClose_C(filter) + Filter filter; +#endif +{ + /* make sure we have something to work with */ + if( !filter ) + return(0); + + /* close file if we are not in debug mode */ + if( (filter->debug < 2) && filter->fp ){ + fclose(filter->fp); + filter->fp = NULL; + } + return(1); +} + +/* + * + * FilterProgCompile_C -- compile the filter program + * + */ +#ifdef ANSI_FUNC +static int +FilterProgCompile_C (Filter filter) +#else +static int FilterProgCompile_C(filter) + Filter filter; +#endif +{ + char *s; + char *math; + char tbuf[SZ_LINE]; + char pmode[SZ_LINE]; + char log[SZ_LINE]; + char *devnull; +#ifdef USE_LAUNCH + char *stdfiles[3]; +#else + char tbuf2[SZ_LINE]; +#endif + int len; + int got; + int keep=0; + + /* make sure we have something to work with */ + if( !filter ) + return(0); + + /* make sure we are not in debug mode */ + if( !filter->cc || (filter->debug >= 2) ) + return(1); + + /* flag whether to keep compiler files around */ + if( !(s=getenv("FILTER_KEEP")) || !istrue(s) ) + keep = 0; + else + keep = 1; + + /* add math library, if necessary */ + switch(filter->pipeos){ + case PIPE_WIN32: + math = ""; + break; + default: + math = "-lm"; + break; + } + + /* set up /dev/null */ +#if HAVE_MINGW32 + devnull = "nul"; +#else + devnull = "/dev/null"; +#endif + + /* get log file name */ + snprintf(log, SZ_LINE, "%s.log", filter->prog); + + /* delete old version */ + unlink(filter->prog); + + switch(filter->ptype){ + case PTYPE_PROCESS: + /* make up the compile command */ + snprintf(tbuf, SZ_LINE, "%s %s -o %s %s %s %s %s", + filter->cc, filter->cflags, filter->prog, filter->code, + filter->objs ? filter->objs : " ", + filter->extra, math); +#ifndef USE_LAUNCH + snprintf(tbuf2, SZ_LINE, " 1>%s 2>%s", devnull, log); + strcat(tbuf, tbuf2); +#endif + strcpy(pmode, "x"); + break; + case PTYPE_CONTAINED: + /* make up the compile command */ + snprintf(tbuf, SZ_LINE, "%s %s -o %s %s %s %s", + filter->cc, filter->cflags, filter->prog, filter->code, + filter->extra, math); +#ifndef USE_LAUNCH + snprintf(tbuf2, SZ_LINE, " 1>%s 2>%s", devnull, log); + strcat(tbuf, tbuf2); +#endif + strcpy(pmode, "x"); + break; +#ifdef USE_DL + case PTYPE_DYNAMIC: + snprintf(tbuf, SZ_LINE, "%s %s %s %s -o %s %s %s", + filter->cc, filter->cflags, filter->shflags, + filter->objs ? filter->objs : " ", + filter->prog, filter->code, filter->extra); +#ifndef USE_LAUNCH + snprintf(tbuf2, SZ_LINE, " 1>%s 2>%s", devnull, log); + strcat(tbuf, tbuf2); +#endif + strcpy(pmode, "r"); + break; +#endif + default: + return(0); + } + + /* issue the shell command to compile the program */ +#ifdef USE_LAUNCH + stdfiles[0] = NULL; + stdfiles[1] = devnull; + stdfiles[2] = log; + got = Launch(tbuf, 1, stdfiles, NULL); +#else + got = system(tbuf); +#endif + + /* delete the filter program body in any case */ + if( !keep ) + unlink(filter->code); + + /* Sun cc can leave an extraneous .o around, which we don't want */ + strcpy(tbuf, filter->code); + /* change .c to .o */ + tbuf[strlen(tbuf)-1] = 'o'; + unlink(tbuf); + /* ... actually its usually left in the current directory */ + if( (s = strrchr(tbuf, '/')) ) + unlink(s+1); + + /* now we can see if we succeeded in issuing the command */ + if( got < 0 ){ + gerror(stderr, "could not run filter compilation\n"); + return(0); + } + + /* if we have an executable program, we succeeded */ + if( (s=Find(filter->prog, pmode, NULL, NULL)) != NULL ){ + unlink(log); + if( s ) xfree(s); + } + else{ + s = FileContents(log, 0, &len); + if( s && *s && len ){ + fprintf(stderr, "Compilation error message:\n%s\n", s); + } + if( !keep ){ + unlink(log); + } + if( s ) xfree(s); + gerror(stderr, "filter compilation failed\n"); + return(0); + } + + /* good news */ + return(1); +} + + +/* + * + * FilterProgEnd_C -- end the filtering process + * + */ +#ifdef ANSI_FUNC +static int +FilterProgEnd_C (Filter filter) +#else +int FilterProgEnd_C(filter) + Filter filter; +#endif +{ + char *s; + int status=0; + + /* make sure we have something to play with */ + if( filter == NULL) + return(0); + + /* delete the filter program */ + unlink(filter->prog); + /* delete the filter program body, if necessary */ + if( !(s=getenv("FILTER_KEEP")) || !istrue(s) ) + unlink(filter->code); + return(status); +} + +/* + * + * Public Routines + * + */ + +/* + * + * FilterProgLoad_C -- load the routines needed to support C filtering + * + */ +#ifdef ANSI_FUNC +int +FilterProgLoad_C (Filter filter) +#else +int FilterProgLoad_C(filter) + Filter filter; +#endif +{ + /* make sure we have something to work with */ + if( !filter ) + return(0); + + filter->filt_open = FilterProgOpen_C; + filter->filt_prepend = FilterProgPrepend_C; + filter->filt_write = FilterProgWrite_C; + filter->filt_append = FilterProgAppend_C; + filter->filt_close = FilterProgClose_C; + filter->filt_compile = FilterProgCompile_C; + filter->filt_end = FilterProgEnd_C; + return(1); +} |