[16959] | 1 | #include "config.h" |
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[14547] | 2 | #ifndef NON_UNIX_STDIO |
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| 3 | #define _INCLUDE_POSIX_SOURCE /* for HP-UX */ |
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| 4 | #define _INCLUDE_XOPEN_SOURCE /* for HP-UX */ |
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| 5 | #include <sys/types.h> |
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| 6 | #include <sys/stat.h> |
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| 7 | #endif |
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| 8 | #include "f2c.h" |
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| 9 | #ifdef KR_headers |
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| 10 | extern char *malloc(); |
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| 11 | #else |
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| 12 | #undef abs |
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| 13 | #undef min |
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| 14 | #undef max |
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| 15 | #include <stdlib.h> |
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| 16 | #endif |
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| 17 | #include "fio.h" |
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| 18 | #include "fmt.h" /* for struct syl */ |
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| 19 | |
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| 20 | /*global definitions*/ |
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| 21 | unit f__units[MXUNIT]; /*unit table*/ |
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| 22 | int f__init; /*bit 0: set after initializations; |
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| 23 | bit 1: set during I/O involving returns to |
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| 24 | caller of library (or calls to user code)*/ |
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| 25 | cilist *f__elist; /*active external io list*/ |
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| 26 | icilist *f__svic; /*active internal io list*/ |
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| 27 | flag f__reading; /*1 if reading, 0 if writing*/ |
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| 28 | flag f__cplus,f__cblank; |
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| 29 | char *f__fmtbuf; |
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| 30 | int f__fmtlen; |
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| 31 | flag f__external; /*1 if external io, 0 if internal */ |
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| 32 | #ifdef KR_headers |
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| 33 | int (*f__doed)(),(*f__doned)(); |
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| 34 | int (*f__doend)(),(*f__donewrec)(),(*f__dorevert)(); |
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| 35 | int (*f__getn)(); /* for formatted input */ |
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| 36 | void (*f__putn)(); /* for formatted output */ |
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| 37 | #else |
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| 38 | int (*f__getn)(void); /* for formatted input */ |
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| 39 | void (*f__putn)(int); /* for formatted output */ |
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| 40 | int (*f__doed)(struct syl*, char*, ftnlen),(*f__doned)(struct syl*); |
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| 41 | int (*f__dorevert)(void),(*f__donewrec)(void),(*f__doend)(void); |
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| 42 | #endif |
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| 43 | flag f__sequential; /*1 if sequential io, 0 if direct*/ |
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| 44 | flag f__formatted; /*1 if formatted io, 0 if unformatted*/ |
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| 45 | FILE *f__cf; /*current file*/ |
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| 46 | unit *f__curunit; /*current unit*/ |
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| 47 | int f__recpos; /*place in current record*/ |
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| 48 | int f__cursor, f__hiwater, f__scale; |
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| 49 | char *f__icptr; |
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| 50 | |
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| 51 | /*error messages*/ |
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| 52 | char *F_err[] = |
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| 53 | { |
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| 54 | "error in format", /* 100 */ |
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| 55 | "illegal unit number", /* 101 */ |
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| 56 | "formatted io not allowed", /* 102 */ |
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| 57 | "unformatted io not allowed", /* 103 */ |
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| 58 | "direct io not allowed", /* 104 */ |
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| 59 | "sequential io not allowed", /* 105 */ |
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| 60 | "can't backspace file", /* 106 */ |
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| 61 | "null file name", /* 107 */ |
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| 62 | "can't stat file", /* 108 */ |
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| 63 | "unit not connected", /* 109 */ |
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| 64 | "off end of record", /* 110 */ |
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| 65 | "truncation failed in endfile", /* 111 */ |
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| 66 | "incomprehensible list input", /* 112 */ |
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| 67 | "out of free space", /* 113 */ |
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| 68 | "unit not connected", /* 114 */ |
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| 69 | "read unexpected character", /* 115 */ |
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| 70 | "bad logical input field", /* 116 */ |
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| 71 | "bad variable type", /* 117 */ |
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| 72 | "bad namelist name", /* 118 */ |
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| 73 | "variable not in namelist", /* 119 */ |
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| 74 | "no end record", /* 120 */ |
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| 75 | "variable count incorrect", /* 121 */ |
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| 76 | "subscript for scalar variable", /* 122 */ |
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| 77 | "invalid array section", /* 123 */ |
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| 78 | "substring out of bounds", /* 124 */ |
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| 79 | "subscript out of bounds", /* 125 */ |
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| 80 | "can't read file", /* 126 */ |
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| 81 | "can't write file", /* 127 */ |
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| 82 | "'new' file exists", /* 128 */ |
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| 83 | "can't append to file", /* 129 */ |
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| 84 | "non-positive record number", /* 130 */ |
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| 85 | "I/O started while already doing I/O", /* 131 */ |
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| 86 | "Temporary file name (TMPDIR?) too long" /* 132 */ |
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| 87 | }; |
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| 88 | #define MAXERR (sizeof(F_err)/sizeof(char *)+100) |
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| 89 | |
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| 90 | #ifdef KR_headers |
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| 91 | f__canseek(f) FILE *f; /*SYSDEP*/ |
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| 92 | #else |
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| 93 | f__canseek(FILE *f) /*SYSDEP*/ |
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| 94 | #endif |
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| 95 | { |
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| 96 | #ifdef NON_UNIX_STDIO |
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| 97 | return !isatty(fileno(f)); |
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| 98 | #else |
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| 99 | struct stat x; |
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| 100 | |
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| 101 | if (fstat(fileno(f),&x) < 0) |
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| 102 | return(0); |
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| 103 | #ifdef S_IFMT |
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| 104 | switch(x.st_mode & S_IFMT) { |
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| 105 | case S_IFDIR: |
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| 106 | case S_IFREG: |
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| 107 | if(x.st_nlink > 0) /* !pipe */ |
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| 108 | return(1); |
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| 109 | else |
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| 110 | return(0); |
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| 111 | case S_IFCHR: |
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| 112 | if(isatty(fileno(f))) |
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| 113 | return(0); |
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| 114 | return(1); |
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| 115 | #ifdef S_IFBLK |
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| 116 | case S_IFBLK: |
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| 117 | return(1); |
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| 118 | #endif |
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| 119 | } |
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| 120 | #else |
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| 121 | #ifdef S_ISDIR |
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| 122 | /* POSIX version */ |
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| 123 | if (S_ISREG(x.st_mode) || S_ISDIR(x.st_mode)) { |
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| 124 | if(x.st_nlink > 0) /* !pipe */ |
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| 125 | return(1); |
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| 126 | else |
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| 127 | return(0); |
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| 128 | } |
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| 129 | if (S_ISCHR(x.st_mode)) { |
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| 130 | if(isatty(fileno(f))) |
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| 131 | return(0); |
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| 132 | return(1); |
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| 133 | } |
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| 134 | if (S_ISBLK(x.st_mode)) |
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| 135 | return(1); |
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| 136 | #else |
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| 137 | Help! How does fstat work on this system? |
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| 138 | #endif |
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| 139 | #endif |
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| 140 | return(0); /* who knows what it is? */ |
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| 141 | #endif |
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| 142 | } |
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| 143 | |
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| 144 | void |
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| 145 | #ifdef KR_headers |
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| 146 | f__fatal(n,s) char *s; |
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| 147 | #else |
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| 148 | f__fatal(int n, char *s) |
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| 149 | #endif |
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| 150 | { |
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| 151 | static int dead = 0; |
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| 152 | |
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| 153 | if(n<100 && n>=0) perror(s); /*SYSDEP*/ |
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| 154 | else if(n >= (int)MAXERR || n < -1) |
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| 155 | { fprintf(stderr,"%s: illegal error number %d\n",s,n); |
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| 156 | } |
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| 157 | else if(n == -1) fprintf(stderr,"%s: end of file\n",s); |
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| 158 | else |
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| 159 | fprintf(stderr,"%s: %s\n",s,F_err[n-100]); |
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| 160 | if (dead) { |
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| 161 | fprintf (stderr, "(libf2c f__fatal already called, aborting.)"); |
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| 162 | abort(); |
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| 163 | } |
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| 164 | dead = 1; |
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| 165 | if (f__init & 1) { |
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| 166 | if (f__curunit) { |
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| 167 | fprintf(stderr,"apparent state: unit %d ", |
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| 168 | (int)(f__curunit-f__units)); |
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| 169 | fprintf(stderr, f__curunit->ufnm ? "named %s\n" : "(unnamed)\n", |
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| 170 | f__curunit->ufnm); |
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| 171 | } |
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| 172 | else |
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| 173 | fprintf(stderr,"apparent state: internal I/O\n"); |
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| 174 | if (f__fmtbuf) |
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| 175 | fprintf(stderr,"last format: %.*s\n",f__fmtlen,f__fmtbuf); |
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| 176 | fprintf(stderr,"lately %s %s %s %s",f__reading?"reading":"writing", |
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| 177 | f__sequential?"sequential":"direct",f__formatted?"formatted":"unformatted", |
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| 178 | f__external?"external":"internal"); |
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| 179 | } |
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| 180 | f__init &= ~2; /* No longer doing I/O (no more user code to be called). */ |
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| 181 | sig_die(" IO", 1); |
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| 182 | } |
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| 183 | /*initialization routine*/ |
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| 184 | VOID |
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| 185 | f_init(Void) |
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| 186 | { unit *p; |
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| 187 | |
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| 188 | if (f__init & 2) |
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| 189 | f__fatal (131, "I/O recursion"); |
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| 190 | f__init = 1; |
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| 191 | p= &f__units[0]; |
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| 192 | p->ufd=stderr; |
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| 193 | p->useek=f__canseek(stderr); |
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| 194 | p->ufmt=1; |
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| 195 | p->uwrt=1; |
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| 196 | p = &f__units[5]; |
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| 197 | p->ufd=stdin; |
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| 198 | p->useek=f__canseek(stdin); |
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| 199 | p->ufmt=1; |
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| 200 | p->uwrt=0; |
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| 201 | p= &f__units[6]; |
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| 202 | p->ufd=stdout; |
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| 203 | p->useek=f__canseek(stdout); |
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| 204 | p->ufmt=1; |
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| 205 | p->uwrt=1; |
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| 206 | } |
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| 207 | #ifdef KR_headers |
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| 208 | f__nowreading(x) unit *x; |
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| 209 | #else |
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| 210 | f__nowreading(unit *x) |
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| 211 | #endif |
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| 212 | { |
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[18476] | 213 | off_t loc; |
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[14547] | 214 | int ufmt, urw; |
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| 215 | extern char *f__r_mode[], *f__w_mode[]; |
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| 216 | |
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| 217 | if (x->urw & 1) |
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| 218 | goto done; |
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| 219 | if (!x->ufnm) |
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| 220 | goto cantread; |
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| 221 | ufmt = x->url ? 0 : x->ufmt; |
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[18476] | 222 | loc = FTELL(x->ufd); |
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[14547] | 223 | urw = 3; |
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| 224 | if (!freopen(x->ufnm, f__w_mode[ufmt|2], x->ufd)) { |
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| 225 | urw = 1; |
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| 226 | if(!freopen(x->ufnm, f__r_mode[ufmt], x->ufd)) { |
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| 227 | cantread: |
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| 228 | errno = 126; |
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| 229 | return 1; |
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| 230 | } |
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| 231 | } |
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[18476] | 232 | FSEEK(x->ufd,loc,SEEK_SET); |
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[14547] | 233 | x->urw = urw; |
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| 234 | done: |
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| 235 | x->uwrt = 0; |
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| 236 | return 0; |
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| 237 | } |
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| 238 | #ifdef KR_headers |
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| 239 | f__nowwriting(x) unit *x; |
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| 240 | #else |
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| 241 | f__nowwriting(unit *x) |
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| 242 | #endif |
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| 243 | { |
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[18476] | 244 | off_t loc; |
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[14547] | 245 | int ufmt; |
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| 246 | extern char *f__w_mode[]; |
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| 247 | |
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| 248 | if (x->urw & 2) |
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| 249 | goto done; |
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| 250 | if (!x->ufnm) |
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| 251 | goto cantwrite; |
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| 252 | ufmt = x->url ? 0 : x->ufmt; |
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| 253 | if (x->uwrt == 3) { /* just did write, rewind */ |
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| 254 | if (!(f__cf = x->ufd = |
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| 255 | freopen(x->ufnm,f__w_mode[ufmt],x->ufd))) |
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| 256 | goto cantwrite; |
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| 257 | x->urw = 2; |
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| 258 | } |
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| 259 | else { |
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[18476] | 260 | loc=FTELL(x->ufd); |
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[14547] | 261 | if (!(f__cf = x->ufd = |
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| 262 | freopen(x->ufnm, f__w_mode[ufmt |= 2], x->ufd))) |
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| 263 | { |
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| 264 | x->ufd = NULL; |
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| 265 | cantwrite: |
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| 266 | errno = 127; |
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| 267 | return(1); |
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| 268 | } |
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| 269 | x->urw = 3; |
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[18476] | 270 | FSEEK(x->ufd,loc,SEEK_SET); |
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[14547] | 271 | } |
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| 272 | done: |
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| 273 | x->uwrt = 1; |
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| 274 | return 0; |
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| 275 | } |
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| 276 | |
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| 277 | int |
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| 278 | #ifdef KR_headers |
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| 279 | err__fl(f, m, s) int f, m; char *s; |
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| 280 | #else |
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| 281 | err__fl(int f, int m, char *s) |
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| 282 | #endif |
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| 283 | { |
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| 284 | if (!f) |
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| 285 | f__fatal(m, s); |
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| 286 | if (f__doend) |
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| 287 | (*f__doend)(); |
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| 288 | f__init &= ~2; |
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| 289 | return errno = m; |
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| 290 | } |
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