Enabled use of libedit as alternative to libreadline

acinclude.m4

@@ -144,6 +144,56 @@ iconv_close(cd);
 ])
 
 
+dnl LIBBURNIA_TRY_EDITLINE is by Thomas Schmitt, libburnia project
+dnl It performs the actual test compilation for editline.
+dnl Variable LIBS has to be set by the caller.
+AC_DEFUN([LIBBURNIA_TRY_EDITLINE],
+[
+    AC_TRY_LINK([
+#include <ctype.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <histedit.h>],
+[EditLine *editline_handle; History *editline_history; HistEvent ev; int count;
+editline_handle= el_init("dummy", stdin, stdout, stderr);
+el_set(editline_handle, EL_EDITOR, "emacs");
+editline_history= history_init();
+history(editline_history, &ev, H_SETSIZE, 1000);
+el_gets(editline_handle, &count);
+], [editline_test="yes"], [editline_test="no"]
+    )
+])
+
+dnl LIBBURNIA_ASSERT_EDITLINE is by Thomas Schmitt, libburnia project
+dnl It disables xorriso editline if not all needed functions are present
+AC_DEFUN([LIBBURNIA_ASSERT_EDITLINE],
+[
+  if test x$XORRISO_ASSUME_EDITLINE = x
+  then
+    dnl Check for the essential gestures of xorriso/text_io.c
+    AC_MSG_CHECKING([for desired functions in libedit])
+    libburnia_save_LIBS="$LIBS"
+    LIBS="$LIBS -ledit"
+    LIBBURNIA_TRY_EDITLINE
+    if test x$editline_test = xno
+    then
+        LIBS="$libburnia_save_LIBS"
+        LIBS="$LIBS -ledit"
+        LIBBURNIA_TRY_EDITLINE
+    fi
+    if test x$editline_test = xno
+    then
+        READLINE_DEF=
+        LIBS="$libburnia_save_LIBS"
+    fi
+    AC_MSG_RESULT([$editline_test $editline_msg])
+  fi
+])
+
+
 dnl LIBBURNIA_TRY_READLINE is by Thomas Schmitt, libburnia project
 dnl It performs the actual test compilation for readline.
 dnl Variable LIBS has to be set by the caller.
@@ -166,14 +216,13 @@ hl= history_list();
     )
 ])
 
-
 dnl LIBBURNIA_ASSERT_READLINE is by Thomas Schmitt, libburnia project
 dnl It disables xorriso readline if not all needed functions are present
 AC_DEFUN([LIBBURNIA_ASSERT_READLINE],
 [
   if test x$XORRISO_ASSUME_READLINE = x
   then
-    dnl Check for the essential gestures of libisofs/util.c
+    dnl Check for the essential gestures of xorriso/text_io.c
     AC_MSG_CHECKING([for desired functions in libreadline])
     readline_msg=
     libburnia_save_LIBS="$LIBS"

configure.ac

@@ -144,8 +144,24 @@ dnl The X= in the yes case prevents that -lreadline gets linked twice
 else
     READLINE_DEF=
 fi
+if test x$READLINE_DEF = x; then
+    AC_ARG_ENABLE(libedit,
+    [  --enable-libedit    Enable use of libedit by xorriso if not libreadline, default=yes],
+                   , enable_libedit=yes)
+    if test x$enable_libedit = xyes; then
+dnl Check whether there is development and runtime support.
+dnl If not, erase this macro which would enable use of el_*(), history*()
+        READLINE_DEF="-DXorriso_with_editlinE"
+
+        LIBBURNIA_ASSERT_EDITLINE
+
+    else
+        READLINE_DEF=
+    fi
+fi
 AC_SUBST(READLINE_DEF)
 
+
 dnl ts A90329
 dnl ACL and xattr do not need to be enabled in libisoburn or xorriso source
 dnl but without AC_CHECK_LIB() xorriso will not be linked with -lacl .

xorriso/base_obj.c

@@ -3,7 +3,7 @@
 
 /* xorriso - creates, loads, manipulates and burns ISO 9660 filesystem images.
 
-   Copyright 2007-2013 Thomas Schmitt, <scdbackup@gmx.net>
+   Copyright 2007-2014 Thomas Schmitt, <scdbackup@gmx.net>
 
    Provided under GPL version 2 or later.
 
@@ -111,6 +111,9 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
    free(leafname);
    return(-1);
  }
+
+ /* Base initialization by actions which must not fail */
+
  m->libs_are_started= 0;
  strncpy(m->progname,progname,sizeof(m->progname)-1);
  m->progname[sizeof(m->progname)-1]= 0;
@@ -431,6 +434,9 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
 
  m->info_text[0]= 0;
 
+
+ /* Here begin actions which might fail */
+
  ret= Sfile_leafname(progname, leafname, 0);
  if(ret<=0)
    goto failure;

xorriso/configure_ac.txt

@@ -174,9 +174,29 @@ dnl The X= in the yes case prevents that -lreadline gets linked twice
 else
     READLINE_DEF=
 fi
+if test x$READLINE_DEF = x; then
+    AH_TEMPLATE([Xorriso_with_editlinE],
+                [Define to use libedit if not libreadline])
+    AC_ARG_ENABLE(libedit,
+    [  --enable-libedit    Enable use of libedit by xorriso if not libreadline, default=yes],
+                   , enable_libedit=yes)
+    if test x$enable_libedit = xyes; then
+dnl Check whether there is development and runtime support.
+dnl If not, erase this macro which would enable use of el_*(), history*()
+        READLINE_DEF="-DXorriso_with_editlinE"
+
+        LIBBURNIA_ASSERT_EDITLINE
+
+    else
+        READLINE_DEF=
+    fi
+fi
 if test x$READLINE_DEF = x-DXorriso_with_readlinE
 then
     AC_DEFINE([Xorriso_with_readlinE], [])
+elif test x$READLINE_DEF = x-DXorriso_with_editlinE
+then
+    AC_DEFINE([Xorriso_with_editlinE], [])
 fi
 
 AH_TEMPLATE([Libisofs_with_aaip_acL], [Define to use ACL capabilities])

xorriso/lib_mgt.c

@@ -1,7 +1,7 @@
 
 /* xorriso - creates, loads, manipulates and burns ISO 9660 filesystem images.
 
-   Copyright 2007-2011 Thomas Schmitt, <scdbackup@gmx.net>
+   Copyright 2007-2014 Thomas Schmitt, <scdbackup@gmx.net>
 
    Provided under GPL version 2 or later.
 
@@ -929,10 +929,14 @@ int Xorriso_list_extras(struct XorrisO *xorriso, char *mode, int flag)
  Xorriso_list_extras_result(xorriso, mode, "dvd_obs", 0);
 
  sprintf(xorriso->result_line, "Readline     : %s\n",
+#ifdef Xorriso_with_editlinE
+         "yes , libedit");
+#else
 #ifdef Xorriso_with_readlinE
          "yes");
 #else
          "no");
+#endif
 #endif
  Xorriso_list_extras_result(xorriso, mode, "use_readline", 0);
 

xorriso/opts_d_h.c

@@ -29,6 +29,12 @@
 #include "xorriso_private.h"
 #include "xorrisoburn.h"
 
+#ifdef Xorriso_with_readlinE
+#define Xorriso_with_line_editoR
+#endif
+#ifdef Xorriso_with_editlinE
+#define Xorriso_with_line_editoR
+#endif
 
 /* Command -data_cache_size */
 int Xorriso_option_data_cache_size(struct XorrisO *xorriso, char *num_tiles,
@@ -2185,12 +2191,12 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "  -page len width  Prompt user after len output lines (0=no prompt).",
 "              width (default 80) can adjust line number computation",
 "              to the output terminal's line width.",
-#ifdef Xorriso_with_readlinE
+#ifdef Xorriso_with_line_editoR
 "  -use_readline \"on\"|\"off\"",
 "              Whether to use libreadline for dialog if available.",
 "  -history text  Copy text into libreadline history. This command",
 "              itself is not copied to the history list.",
-#endif /* Xorriso_with_readlinE */
+#endif /* Xorriso_with_line_editoR */
 "  -sh_style_result \"on\"|\"off\"",
 "              If \"on\" do not wrap file addresses in quotation marks with",
 "                -pwd -pwdx -ls -lsd -lsl -lsdl -lsx -lsdx -lslx -lsdlx",

xorriso/text_io.c

@@ -41,8 +41,14 @@
 #include <readline/readline.h>
 #include <readline/history.h>
 #endif /* ! Xorriso_with_old_readlinE */
+#define Xorriso_with_line_editoR yes
 #endif /* Xorriso_with_readlinE */
 
+#ifdef Xorriso_with_editlinE
+#include <histedit.h>
+#define Xorriso_with_line_editoR yes
+#endif /* Xorriso_with_editlinE */
+
 
 #include "xorriso.h"
 #include "xorriso_private.h"
@@ -59,6 +65,218 @@ int Xorriso_protect_stdout(struct XorrisO *xorriso, int flag)
  return(1);
 }
 
+#ifdef Xorriso_with_editlinE
+
+/* These have to be global and shared by all XorrisOs which might be active.
+*/
+static EditLine *editline_handle= NULL;
+static History *editline_history= NULL;
+static int editline_is_initialized= 0;
+
+char *Xorriso__editline_prompt(EditLine *el_handle)
+{
+  return "";
+}
+
+
+void Xorriso_init_editline(struct XorrisO *xorriso, int flag)
+{
+ HistEvent ev;
+
+ /* >>> Need mutex */
+
+ if(editline_is_initialized != 0)
+   return;
+ editline_is_initialized= -1; /* Invalid */
+
+ editline_handle= el_init(xorriso->progname, stdin, stdout, stderr);
+ if(editline_handle == NULL)
+   return;
+ el_set(editline_handle, EL_EDITOR, "emacs");
+ el_set(editline_handle, EL_PROMPT, &Xorriso__editline_prompt);
+
+ editline_history= history_init();
+ if(editline_history == NULL)
+   return;
+ history(editline_history, &ev, H_SETSIZE, 1000);
+ el_set(editline_handle, EL_HIST, history, editline_history);
+
+ /* >>> ??? where to apply history_end() and el_end() ? */;
+
+ editline_is_initialized= 1; /* Valid now */
+ return;
+}
+
+#endif /* Xorriso_with_editlinE */
+
+#ifdef Xorriso_with_line_editoR
+
+char *Xorriso_emul_readline(struct XorrisO *xorriso, int flag)
+{
+
+#ifdef Xorriso_with_editlinE
+
+ const char *cpt;
+ int count= 0;
+ char *retpt;
+
+ /* >>> Need mutex */
+
+ Xorriso_init_editline(xorriso, 0);
+ if(editline_is_initialized < 0) {
+
+   /* >>> fallback */;
+
+ }
+
+ cpt= el_gets(editline_handle, &count);
+ if(count == -1 || cpt == NULL)
+   return(NULL);
+ retpt= calloc(1, count + 1);
+ if(retpt == NULL)
+   return(NULL);
+ memcpy(retpt, cpt, count);
+ retpt[count]= 0;
+ return(retpt);
+
+#else
+
+#ifdef Xorriso_with_readlinE
+
+ char *cpt;
+
+ cpt= readline("");
+ return(cpt);
+
+#else
+
+ return(NULL);
+
+#endif /* ! Xorriso_with_readlinE */
+#endif /* ! Xorriso_with_editlinE */
+}
+
+
+void Xorriso_emul_add_history(struct XorrisO *xorriso, char *line, int flag)
+{
+#ifdef Xorriso_with_editlinE
+
+ HistEvent ev;
+
+ /* >>> Need mutex */
+
+ Xorriso_init_editline(xorriso, 0);
+ if(editline_is_initialized < 0)
+   return;
+
+ history(editline_history, &ev, H_ENTER, line);
+
+#else
+
+#ifdef Xorriso_with_readlinE
+
+ add_history(line);
+
+#else
+
+ /* ??? How to raise protest ? */;
+
+#endif /* ! Xorriso_with_readlinE */
+#endif /* ! Xorriso_with_editlinE */
+}
+
+
+/* @param flag  bit1= do only report to fp
+*/
+int Xorriso_status_history(struct XorrisO *xorriso, char *filter, FILE *fp,
+                           int flag)
+{
+
+#ifdef Xorriso_with_editlinE
+
+ int ret, l;
+ HistEvent ev;
+ int hc, i, was_end= 0;
+ char *str= NULL;
+
+
+ /* >>> Need mutex */
+
+ Xorriso_init_editline(xorriso, 0);
+ if(editline_is_initialized < 0)
+   {ret= 0; goto ex;}
+
+ Xorriso_alloc_meM(str, char, SfileadrL);
+
+ ret= history(editline_history, &ev, H_LAST);
+ for(hc= 0; ret != -1; hc++) {
+   ret= history(editline_history, &ev, H_PREV);
+   was_end = (strcmp(ev.str, "-end") == 0);
+ }
+ if(was_end)
+   hc--;
+ if(hc >= xorriso->status_history_max)
+   i= hc - xorriso->status_history_max;
+ else
+   i= 0;
+ 
+ ret= history(editline_history, &ev, H_LAST);
+ for(; i < hc && ret != -1; i++) {
+   /* Eat newline at line end */
+   strncpy(str, ev.str, SfileadrL - 1);
+   str[SfileadrL - 1]= 0;
+   l= strlen(str);
+   if(l > 0)
+     if(str[l - 1] == '\n')
+       str[l - 1]= 0;
+
+   sprintf(xorriso->result_line, "-history ");
+   Text_shellsafe(str, xorriso->result_line, 1);
+   strcat(xorriso->result_line, "\n");
+   Xorriso_status_result(xorriso, filter, fp, flag & 2);
+   ret= history(editline_history, &ev, H_PREV);
+ }
+ ret= 1;
+ex:;
+ Xorriso_free_meM(str);
+ return(ret);
+
+#else
+#ifdef Xorriso_with_readlinE
+
+ HIST_ENTRY **hl;
+ int hc, i;
+
+ hl= history_list();
+ if(hl != NULL) {
+   for(hc= 0; hl[hc] != NULL; hc++);
+   if(hc > 0)
+     if(strcmp(hl[hc-1]->line, "-end") == 0)
+       hc--;
+   if(hc >= xorriso->status_history_max)
+     i= hc - xorriso->status_history_max;
+   else
+     i= 0;
+   for(; i < hc; i++) {
+     sprintf(xorriso->result_line, "-history ");
+     Text_shellsafe(hl[i]->line, xorriso->result_line, 1);
+     strcat(xorriso->result_line, "\n");
+     Xorriso_status_result(xorriso, filter, fp, flag & 2);
+   }
+ }
+ return(1);
+
+#else /* Xorriso_with_readlinE */
+
+ return(0);
+
+#endif /* ! Xorriso_with_readlinE */
+#endif /* ! Xorriso_with_editlinE */
+
+}
+
+#endif /* Xorriso_with_line_editoR */
+
 
 int Xorriso_dialog_input(struct XorrisO *xorriso, char line[], int linesize,
                          int flag)
@@ -73,10 +291,10 @@ int Xorriso_dialog_input(struct XorrisO *xorriso, char line[], int linesize,
 {
  char *cpt= NULL, **argv= NULL, *linept, *why_append= "";
  int ret, argc= 0, base_length= 0, l, append_line;
-#ifdef Xorriso_with_readlinE
+#ifdef Xorriso_with_line_editoR
  static char last_input[SfileadrL]= {""};
  int no_history= 0;
-#endif /* ! Xorriso_with_readlinE */
+#endif /* Xorriso_with_line_editoR */
  double tdiff;
  struct timeval tv;
  struct timezone tz;
@@ -88,7 +306,7 @@ int Xorriso_dialog_input(struct XorrisO *xorriso, char line[], int linesize,
  fflush(stdout);
  linept= line;
 
-#ifdef Xorriso_with_readlinE
+#ifdef Xorriso_with_line_editoR
  no_history= (flag & 1) || xorriso->use_stdin;
 #endif
 
@@ -103,7 +321,7 @@ get_single:;
    goto process_single;
  }
 
-#ifdef Xorriso_with_readlinE
+#ifdef Xorriso_with_line_editoR
 
  if(xorriso->use_stdin || xorriso->dev_fd_1>=0 ||
     xorriso->tolerate_stdin_eof) {
@@ -125,7 +343,7 @@ get_single:;
  if(flag&2) {
    cpt= NULL;
  } else {
-   cpt= readline("");
+   cpt= Xorriso_emul_readline(xorriso, 0);
    if(cpt==NULL) {
      /* need a very dramatic end */
      kill(getpid(),SIGHUP);
@@ -142,7 +360,7 @@ get_single:;
      strcpy(linept, cpt);
  }
 
-#else /*  Xorriso_with_readlinE */
+#else /* Xorriso_with_line_editoR */
 
  if(flag&2)
    {ret= 1; goto ex;}
@@ -155,7 +373,7 @@ get_single:;
    {ret= -1; goto ex;}
  }
 
-#endif /* ! Xorriso_with_readlinE */
+#endif /* ! Xorriso_with_line_editoR */
 
 process_single:;
 
@@ -209,19 +427,19 @@ new_empty:;
    }
  }
 
-#ifdef Xorriso_with_readlinE
+#ifdef Xorriso_with_line_editoR
 
 put_into_history:;
  if((flag & 32) || (line[0]!=0 && strcmp(last_input,line)!=0 && !no_history)) {
    if(!((flag&4) && 
       (strncmp(line,"-history:",9)==0 || strncmp(line,"-history ",9)==0))) {
-     add_history(line);
+     Xorriso_emul_add_history(xorriso, line, 0);
      strncpy(last_input,line,sizeof(last_input)-1);
      last_input[sizeof(last_input)-1]= 0;
    }
  }
 
-#endif /* ! Xorriso_with_readlinE */
+#endif /* Xorriso_with_line_editoR */
 
  ret= 1;
 ex:;
@@ -3185,30 +3403,12 @@ int Xorriso_status(struct XorrisO *xorriso, char *filter, FILE *fp, int flag)
    Xorriso_status_result(xorriso,filter,fp,flag&2);
  }
 
-#ifdef Xorriso_with_readlinE
+#ifdef Xorriso_with_line_editoR
 
- if((flag&8) && xorriso->status_history_max>0) {
-   HIST_ENTRY **hl;
-   int hc,i;
-
-   hl= history_list();
-   if(hl!=NULL) {
-     for(hc= 0;hl[hc]!=NULL;hc++);
-     if(hc>0)
-       if(strcmp(hl[hc-1]->line,"-end")==0)
-         hc--;
-     if(hc>=xorriso->status_history_max)
-       i= hc-xorriso->status_history_max;
-     else
-       i= 0;
-     for(;i<hc;i++) {
-       sprintf(line,"-history %s\n",Text_shellsafe(hl[i]->line,sfe,0));
-       Xorriso_status_result(xorriso,filter,fp,flag&2);
-     }   
-   }
- }
+ if((flag & 8) && xorriso->status_history_max > 0 && !xorriso->use_stdin)
+   Xorriso_status_history(xorriso, filter, fp, flag & 2);
 
-#endif /* Xorriso_with_readlinE */
+#endif /* Xorriso_with_line_editoR */
 
  is_default= (xorriso->toc_emulation_flag == 0);
  sprintf(line,"-rom_toc_scan %s:%s:%s\n",

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2014.06.14.185146"
+#define Xorriso_timestamP "2014.06.14.192149"