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feread.cc File Reference
#include "kernel/mod2.h"
#include <errno.h>
#include <stdio.h>
#include "omalloc/omalloc.h"
#include "misc/options.h"
#include "kernel/oswrapper/feread.h"
#include "reporter/reporter.h"
#include <unistd.h>
#include "Singular/ipid.h"
#include <stdlib.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/stat.h>

Go to the source code of this file.

Macros

#define STDOUT_FILENO   1
 
#define rl_filename_completion_function   filename_completion_function
 
#define rl_completion_matches   completion_matches
 
#define x_rl_line_buffer   (*fe_rl_line_buffer)
 
#define x_rl_completion_matches   (*fe_completion_matches)
 
#define x_rl_filename_completion_function   (*fe_filename_completion_function)
 

Typedefs

typedef char *(* RL_PROC) (const char *, int)
 
typedef char ** CPPFunction()
 
typedef char *(* PROC) ()
 
typedef char ** RL_CPPFunction(const char *, int, int)
 

Functions

static char * fe_fgets_stdin_init (const char *pr, char *s, int size)
 
char * iiArithGetCmd (int)
 
char * command_generator (char *text, int state)
 
char * rl_filename_completion_function (const char *, int)
 
char ** rl_completion_matches (const char *, RL_PROC)
 
char * readline (const char *)
 
void add_history (char *)
 
int write_history ()
 
void using_history ()
 
int read_history (char *)
 
int history_total_bytes ()
 
char * fe_fgets_stdin_rl (const char *pr, char *s, int size)
 
int fe_init_dyn_rl ()
 
char ** singular_completion (char *text, int start, int end)
 
char * fe_fgets_stdin_fe (const char *pr, char *s, int size)
 
char * fe_fgets_stdin_emu (const char *pr, char *s, int size)
 
char * fe_fgets_stdin_drl (const char *pr, char *s, int size)
 
char * fe_fgets (const char *pr, char *s, int size)
 
char * fe_fgets_dummy (const char *, char *, int)
 

Variables

char *(* fe_fgets_stdin )(const char *pr, char *s, int size) = fe_fgets_stdin_init
 
VAR BOOLEAN using_history_called =FALSE
 
EXTERN_VAR char * rl_readline_name
 
EXTERN_VAR char * rl_line_buffer
 
EXTERN_VAR CPPFunctionrl_attempted_completion_function
 
EXTERN_VAR FILE * rl_outstream
 
char *(* fe_filename_completion_function )()
 
char *(* fe_readline )(char *)
 
VAR void(* fe_add_history )(char *)
 
VAR char ** fe_rl_readline_name
 
VAR char ** fe_rl_line_buffer
 
char **(* fe_completion_matches )(...)
 
VAR CPPFunction ** fe_rl_attempted_completion_function
 
VAR FILE ** fe_rl_outstream
 
VAR int(* fe_write_history )()
 
VAR int(* fe_history_total_bytes )()
 
VAR void(* fe_using_history )()
 
VAR int(* fe_read_history )(char *)
 

Macro Definition Documentation

◆ rl_completion_matches

#define rl_completion_matches   completion_matches

Definition at line 123 of file feread.cc.

◆ rl_filename_completion_function

#define rl_filename_completion_function   filename_completion_function

Definition at line 122 of file feread.cc.

◆ STDOUT_FILENO

#define STDOUT_FILENO   1

Definition at line 43 of file feread.cc.

◆ x_rl_completion_matches

#define x_rl_completion_matches   (*fe_completion_matches)

◆ x_rl_filename_completion_function

#define x_rl_filename_completion_function   (*fe_filename_completion_function)

◆ x_rl_line_buffer

#define x_rl_line_buffer   (*fe_rl_line_buffer)

Typedef Documentation

◆ CPPFunction

typedef char ** CPPFunction()

Definition at line 130 of file feread.cc.

◆ PROC

typedef char *(* PROC) ()

Definition at line 143 of file feread.cc.

◆ RL_CPPFunction

typedef char ** RL_CPPFunction(const char *, int, int)

Definition at line 145 of file feread.cc.

◆ RL_PROC

typedef char *(* RL_PROC) (const char *, int)

Definition at line 107 of file feread.cc.

Function Documentation

◆ add_history()

void add_history ( char *  )

◆ command_generator()

char * command_generator ( char *  text,
int  state 
)

Definition at line 52 of file feread.cc.

53{
54 STATIC_VAR int list_index, len;
56 const char *name;
57
58 /* If this is a new word to complete, initialize now. This includes
59 saving the length of TEXT for efficiency, and initializing the index
60 variable to 0. */
61 if (state==0)
62 {
63 list_index = 1;
64 len = strlen (text);
65 h=basePack->idroot;
66 }
67
68 /* Return the next name which partially matches from the command list. */
69 while ((name = iiArithGetCmd(list_index))!=NULL)
70 {
71 list_index++;
72
73 if (strncmp (name, text, len) == 0)
74 return (strdup(name));
75 }
76 if (len>1)
77 {
78 while (h!=NULL)
79 {
80 name=h->id;
81 h=h->next;
82 if (strncmp (name, text, len) == 0)
83 return (strdup(name));
84 }
85 }
86 /* If no names matched, then return NULL. */
87 return ((char *)NULL);
88}
Definition: idrec.h:35
char * iiArithGetCmd(int)
Definition: iparith.cc:9833
#define STATIC_VAR
Definition: globaldefs.h:7
VAR package basePack
Definition: ipid.cc:58
STATIC_VAR Poly * h
Definition: janet.cc:971
#define strdup
Definition: omAllocFunc.c:18
#define NULL
Definition: omList.c:12
int name
New type name for int.
Definition: templateForC.h:21

◆ fe_fgets()

char * fe_fgets ( const char *  pr,
char *  s,
int  size 
)

Definition at line 309 of file feread.cc.

310{
311 if (BVERBOSE(V_PROMPT))
312 {
313 fputs(pr,stdout);
314 }
315 mflush();
316 errno=0;
317 char *line=fgets(s,size,stdin);
318 if (line!=NULL)
319 {
320 for (int i=strlen(line)-1;i>=0;i--) line[i]=line[i]&127;
321 }
322 else
323 {
324 /* NULL can mean various things... */
325 switch(errno)
326 {
327 case 0: return NULL; /*EOF */
328 case EBADF: return NULL; /* stdin got closed */
329 case EINTR: return strcpy(s,"\n"); /* CTRL-C or other signal */
330 default: /* other error */
331 {
332 int errsv = errno;
333 fprintf(stderr,"fgets() failed with errno %d\n%s\n",errsv,strerror(errsv));
334 return NULL;
335 }
336 }
337 }
338 return line;
339}
int size(const CanonicalForm &f, const Variable &v)
int size ( const CanonicalForm & f, const Variable & v )
Definition: cf_ops.cc:600
int i
Definition: cfEzgcd.cc:132
const CanonicalForm int s
Definition: facAbsFact.cc:51
#define BVERBOSE(a)
Definition: options.h:35
#define V_PROMPT
Definition: options.h:54
#define mflush()
Definition: reporter.h:58

◆ fe_fgets_dummy()

char * fe_fgets_dummy ( const char *  pr,
char *  s,
int  size 
)

Definition at line 455 of file feread.cc.

456{
457 return NULL;
458}

◆ fe_fgets_stdin_drl()

char * fe_fgets_stdin_drl ( const char *  pr,
char *  s,
int  size 
)

Definition at line 269 of file feread.cc.

270{
271 if (!BVERBOSE(V_PROMPT))
272 {
273 pr="";
274 }
275 mflush();
276
277 char *line;
278 line = (*fe_readline) ((char*)pr);
279
280 if (line==NULL)
281 return NULL;
282
283 int l=strlen(line);
284 for (int i=l-1;i>=0;i--) line[i]=line[i]&127;
285
286 if (*line!='\0')
287 {
288 (*fe_add_history) (line);
289 }
290 if (l>=size-1)
291 {
292 strncpy(s,line,size);
293 }
294 else
295 {
296 strncpy(s,line,l);
297 s[l]='\n';
298 s[l+1]='\0';
299 }
300 free (line);
301
302 return s;
303}
int l
Definition: cfEzgcd.cc:100
#define free
Definition: omAllocFunc.c:14

◆ fe_fgets_stdin_emu()

char * fe_fgets_stdin_emu ( const char *  pr,
char *  s,
int  size 
)

Definition at line 253 of file feread.cc.

254{
255 if (!BVERBOSE(V_PROMPT))
256 {
257 pr="";
258 }
259 mflush();
260 return fe_fgets_stdin_fe(pr,s,size);
261}
char * fe_fgets_stdin_fe(const char *pr, char *s, int size)

◆ fe_fgets_stdin_fe()

char * fe_fgets_stdin_fe ( const char *  pr,
char *  s,
int  size 
)

◆ fe_fgets_stdin_init()

static char * fe_fgets_stdin_init ( const char *  pr,
char *  s,
int  size 
)
static

Definition at line 344 of file feread.cc.

345{
346#if (defined(HAVE_READLINE) || defined(HAVE_LIBREADLINE)) && !defined(HAVE_DYN_RL) && !defined(HAVE_FEREAD)
347 /* Allow conditional parsing of the ~/.inputrc file. */
348 rl_readline_name = (char*)"Singular";
349 /* Tell the completer that we want a crack first. */
350#ifdef USE_READLINE4
352#else
354#endif
355
356 /* set the output stream */
357 if(!isatty(STDOUT_FILENO))
358 {
359 #ifdef atarist
360 rl_outstream = fopen( "/dev/tty", "w" );
361 #else
362 char *fn=ttyname(fileno(stdin));//if stdout is not a tty, maybe stdin is?
363 if (fn!=NULL) rl_outstream = fopen( fn, "w" );
364 #endif
365 }
366
368 if(isatty(fileno(stdin)))
369 {
370 /* try to read a history */
373 char *p = getenv("SINGULARHIST");
375 if (strlen(p) != 0)
376 {
377 read_history (p);
378 }
380 return(fe_fgets_stdin_rl(pr,s,size));
381 }
382 else
383 {
385 return(fe_fgets(pr,s,size));
386 }
387#endif
388#ifdef HAVE_DYN_RL
389 /* do dynamic loading */
390 int res=fe_init_dyn_rl();
392 if (res!=0)
393 {
394 //if (res==1)
395 // WarnS("dynamic loading of libreadline failed");
396 //else
397 // Warn("dynamic loading failed: %d\n",res);
398 if (res!=1)
399 Warn("dynamic loading failed: %d\n",res);
400 #ifdef HAVE_FEREAD
402 #else
404 #endif
405 return fe_fgets_stdin(pr,s,size);
406 }
407 else if (isatty(STDIN_FILENO))/*and could load libreadline: */
408 {
409 /* Allow conditional parsing of the ~/.inputrc file. */
410 *fe_rl_readline_name = "Singular";
411 /* Tell the completer that we want a crack first. */
413 /* try to read a history */
414 (*fe_using_history)();
416 char *p = getenv("SINGULARHIST");
417 if (p != NULL)
418 {
419 (*fe_read_history) (p);
420 }
421
422 /* set the output stream */
423 if(!isatty(STDOUT_FILENO))
424 {
425 #ifdef atarist
426 *fe_rl_outstream = fopen( "/dev/tty", "w" );
427 #else
428 char *fn=ttyname(fileno(stdin));//if stdout is not a tty, maybe stdin is?
429 if (fn!=NULL) *fe_rl_outstream = fopen( fn, "w" );
430 #endif
431 }
433 return fe_fgets_stdin_drl(pr,s,size);
434 }
435 else
436 {
438 return fe_fgets(pr,s,size);
439 }
440#else
441 #if !defined(HAVE_READLINE) && defined(HAVE_FEREAD)
443 return(fe_fgets_stdin_emu(pr,s,size));
444 #else
446 return(fe_fgets(pr,s,size));
447 #endif
448#endif
449}
#define TRUE
Definition: auxiliary.h:100
#define FALSE
Definition: auxiliary.h:96
int p
Definition: cfModGcd.cc:4078
#define Warn
Definition: emacs.cc:77
CanonicalForm res
Definition: facAbsFact.cc:60
char * getenv()
EXTERN_VAR CPPFunction * rl_attempted_completion_function
Definition: feread.cc:133
EXTERN_VAR FILE * rl_outstream
Definition: feread.cc:134
char ** CPPFunction()
Definition: feread.cc:130
VAR BOOLEAN using_history_called
Definition: feread.cc:106
VAR char ** fe_rl_readline_name
Definition: feread.cc:166
char *(* fe_fgets_stdin)(const char *pr, char *s, int size)
Definition: feread.cc:32
VAR CPPFunction ** fe_rl_attempted_completion_function
Definition: feread.cc:169
int read_history(char *)
char ** singular_completion(char *text, int start, int end)
Definition: feread.cc:178
char * fe_fgets(const char *pr, char *s, int size)
Definition: feread.cc:309
#define STDOUT_FILENO
Definition: feread.cc:43
EXTERN_VAR char * rl_readline_name
Definition: feread.cc:127
void using_history()
char * fe_fgets_stdin_rl(const char *pr, char *s, int size)
char * fe_fgets_stdin_drl(const char *pr, char *s, int size)
Definition: feread.cc:269
char * fe_fgets_stdin_emu(const char *pr, char *s, int size)
Definition: feread.cc:253
VAR FILE ** fe_rl_outstream
Definition: feread.cc:170
int fe_init_dyn_rl()
Definition: fereadl.c:756
#define SINGULARHIST_FILE
Definition: feread.h:20
#define STDIN_FILENO
Definition: fereadl.c:52

◆ fe_fgets_stdin_rl()

char * fe_fgets_stdin_rl ( const char *  pr,
char *  s,
int  size 
)

◆ fe_init_dyn_rl()

int fe_init_dyn_rl ( )

Definition at line 756 of file fereadl.c.

757{
758 int res=0;
759 loop
760 {
761 fe_rl_hdl=dynl_open("libreadline.so");
762 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.2");
763 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.3");
764 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.4");
765 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.5");
766 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.6");
767 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.7");
768 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.8");
769 if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.9");
770 if (fe_rl_hdl==NULL) { return 1;}
771
773 dynl_sym(fe_rl_hdl, "filename_completion_function");
774 if (fe_filename_completion_function==NULL) { res=3; break; }
775 fe_readline=dynl_sym(fe_rl_hdl,"readline");
776 if (fe_readline==NULL) { res=4; break; }
777 fe_add_history=dynl_sym(fe_rl_hdl,"add_history");
778 if (fe_add_history==NULL) { res=5; break; }
779 fe_rl_readline_name=(char**)dynl_sym(fe_rl_hdl,"rl_readline_name");
780 if (fe_rl_readline_name==NULL) { res=6; break; }
781 fe_rl_line_buffer=(char**)dynl_sym(fe_rl_hdl,"rl_line_buffer");
782 if (fe_rl_line_buffer==NULL) { res=7; break; }
783 fe_completion_matches=dynl_sym(fe_rl_hdl,"completion_matches");
784 if (fe_completion_matches==NULL) { res=8; break; }
786 dynl_sym(fe_rl_hdl,"rl_attempted_completion_function");
788 fe_rl_outstream=(FILE**)dynl_sym(fe_rl_hdl,"rl_outstream");
789 if (fe_rl_outstream==NULL) { res=10; break; }
790 fe_write_history=dynl_sym(fe_rl_hdl,"write_history");
791 if (fe_write_history==NULL) { res=11; break; }
792 fe_history_total_bytes=dynl_sym(fe_rl_hdl,"history_total_bytes");
793 if (fe_history_total_bytes==NULL) { res=12; break; }
794 fe_using_history=dynl_sym(fe_rl_hdl,"using_history");
795 if (fe_using_history==NULL) { res=13; break; }
796 fe_read_history=dynl_sym(fe_rl_hdl,"read_history");
797 if (fe_read_history==NULL) { res=14; break; }
798 break;
799 }
801 if (res!=0) dynl_close(fe_rl_hdl);
802 else
803 {
804 char *p;
805 /* more init stuff: */
806 /* Allow conditional parsing of the ~/.inputrc file. */
807 (*fe_rl_readline_name) = "Singular";
808 /* Tell the completer that we want a crack first. */
809 (*fe_rl_attempted_completion_function) = (CPPFunction *)singular_completion;
810 /* try to read a history */
812 (*fe_using_history)();
813 p = getenv("SINGULARHIST");
815 if (strlen(p) != 0)
816 {
817 (*fe_read_history) (p);
818 }
819 }
820 return res;
821}
char ** CPPFunction()
Definition: fereadl.c:712
VAR char ** fe_rl_readline_name
Definition: fereadl.c:717
VAR char ** fe_rl_line_buffer
Definition: fereadl.c:718
char *(* fe_readline)()
Definition: fereadl.c:715
VAR int(* fe_read_history)()
Definition: fereadl.c:725
VAR void(* fe_add_history)()
Definition: fereadl.c:716
VAR int(* fe_write_history)()
Definition: fereadl.c:722
VAR void(* fe_using_history)()
Definition: fereadl.c:724
VAR CPPFunction ** fe_rl_attempted_completion_function
Definition: fereadl.c:720
VAR int(* fe_history_total_bytes)()
Definition: fereadl.c:723
char ** singular_completion(char *text, int start, int end)
Definition: fereadl.c:736
char **(* fe_completion_matches)()
Definition: fereadl.c:719
VAR void * fe_rl_hdl
Definition: fereadl.c:727
char *(* fe_filename_completion_function)()
Definition: fereadl.c:714
VAR FILE ** fe_rl_outstream
Definition: fereadl.c:721
int dynl_close(void *handle)
Definition: mod_raw.cc:170
void * dynl_sym(void *handle, const char *symbol)
Definition: mod_raw.cc:159
void * dynl_open(char *filename)
Definition: mod_raw.cc:142
#define loop
Definition: structs.h:75

◆ history_total_bytes()

int history_total_bytes ( )

◆ iiArithGetCmd()

char * iiArithGetCmd ( int  nPos)

Definition at line 9833 of file iparith.cc.

9834{
9835 if(nPos<0) return NULL;
9836 if(nPos<(int)sArithBase.nCmdUsed)
9837 return sArithBase.sCmds[nPos].name;
9838 return NULL;
9839}
cmdnames * sCmds
array of existing commands
Definition: iparith.cc:186
STATIC_VAR SArithBase sArithBase
Base entry for arithmetic.
Definition: iparith.cc:201
unsigned nCmdUsed
number of commands used
Definition: iparith.cc:191

◆ read_history()

int read_history ( char *  )

◆ readline()

char * readline ( const char *  )

◆ rl_completion_matches()

char ** rl_completion_matches ( const char *  ,
RL_PROC   
)

◆ rl_filename_completion_function()

char * rl_filename_completion_function ( const char *  ,
int   
)

◆ singular_completion()

char ** singular_completion ( char *  text,
int  start,
int  end 
)

Definition at line 178 of file feread.cc.

179{
180 /* If this word is not in a string, then it may be a command
181 to complete. Otherwise it may be the name of a file in the current
182 directory. */
183#ifdef HAVE_DYN_RL
184 #define x_rl_line_buffer (*fe_rl_line_buffer)
185 #define x_rl_completion_matches (*fe_completion_matches)
186 #define x_rl_filename_completion_function (*fe_filename_completion_function)
187#else
188 #define x_rl_line_buffer rl_line_buffer
189 #define x_rl_completion_matches rl_completion_matches
190 #define x_rl_filename_completion_function rl_filename_completion_function
191#endif
192 if ((start>0) && (x_rl_line_buffer[start-1]=='"'))
195#undef x_rl_line_buffer
196#undef x_rl_completion_matches
197 if (m==NULL)
198 {
199 m=(char **)malloc(2*sizeof(char*));
200 m[0]=(char *)malloc(end-start+2);
201 strncpy(m[0],text,end-start+1);
202 m[1]=NULL;
203 }
204 return m;
205}
int m
Definition: cfEzgcd.cc:128
#define x_rl_filename_completion_function
#define x_rl_completion_matches
char * command_generator(char *text, int state)
Definition: feread.cc:52
char *(* RL_PROC)(const char *, int)
Definition: feread.cc:107
#define x_rl_line_buffer
#define malloc
Definition: omAllocFunc.c:12

◆ using_history()

void using_history ( )

◆ write_history()

int write_history ( )

Variable Documentation

◆ fe_add_history

VAR void(* fe_add_history) (char *) ( char *  )

Definition at line 165 of file feread.cc.

◆ fe_completion_matches

char **(* fe_completion_matches) (...) (   ...)

Definition at line 168 of file feread.cc.

◆ fe_fgets_stdin

char *(* fe_fgets_stdin) (const char *pr, char *s, int size) ( const char *  pr,
char *  s,
int  size 
) = fe_fgets_stdin_init

Definition at line 32 of file feread.cc.

◆ fe_filename_completion_function

char *(* fe_filename_completion_function) () ( )

Definition at line 163 of file feread.cc.

◆ fe_history_total_bytes

VAR int(* fe_history_total_bytes) () ( )

Definition at line 172 of file feread.cc.

◆ fe_read_history

VAR int(* fe_read_history) (char *) ( char *  )

Definition at line 174 of file feread.cc.

◆ fe_readline

char *(* fe_readline) (char *) ( char *  )

Definition at line 164 of file feread.cc.

◆ fe_rl_attempted_completion_function

VAR CPPFunction** fe_rl_attempted_completion_function

Definition at line 169 of file feread.cc.

◆ fe_rl_line_buffer

VAR char** fe_rl_line_buffer

Definition at line 167 of file feread.cc.

◆ fe_rl_outstream

VAR FILE** fe_rl_outstream

Definition at line 170 of file feread.cc.

◆ fe_rl_readline_name

VAR char** fe_rl_readline_name

Definition at line 166 of file feread.cc.

◆ fe_using_history

VAR void(* fe_using_history) () ( )

Definition at line 173 of file feread.cc.

◆ fe_write_history

VAR int(* fe_write_history) () ( )

Definition at line 171 of file feread.cc.

◆ rl_attempted_completion_function

EXTERN_VAR CPPFunction* rl_attempted_completion_function

Definition at line 133 of file feread.cc.

◆ rl_line_buffer

EXTERN_VAR char* rl_line_buffer

Definition at line 128 of file feread.cc.

◆ rl_outstream

EXTERN_VAR FILE* rl_outstream

Definition at line 134 of file feread.cc.

◆ rl_readline_name

EXTERN_VAR char* rl_readline_name

Definition at line 127 of file feread.cc.

◆ using_history_called

VAR BOOLEAN using_history_called =FALSE

Definition at line 106 of file feread.cc.