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3759e1163fa5425082c866dc2c1301f563945f9f
conan-build/recipes/bison/all/patches/0004-3.5.3-relocatable.patch
Aleksandr Vodyanov 3759e1163f [DO-981] qt package (!15) 
Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/15
2025-02-13 12:25:48 +03:00

754 lines
24 KiB
Diff
Raw Blame History

--- Makefile.in
+++ Makefile.in
@@ -637,10 +637,10 @@ am_src_bison_OBJECTS = src/bison-AnnotationList.$(OBJEXT) \
src/bison-main.$(OBJEXT) src/bison-muscle-tab.$(OBJEXT) \
src/bison-named-ref.$(OBJEXT) src/bison-nullable.$(OBJEXT) \
src/bison-output.$(OBJEXT) src/bison-parse-gram.$(OBJEXT) \
- src/bison-print-graph.$(OBJEXT) src/bison-print-xml.$(OBJEXT) \
- src/bison-print.$(OBJEXT) src/bison-reader.$(OBJEXT) \
- src/bison-reduce.$(OBJEXT) src/bison-relation.$(OBJEXT) \
- src/bison-scan-code-c.$(OBJEXT) \
+ src/bison-pathtools.$(OBJEXT) src/bison-print-graph.$(OBJEXT) \
+ src/bison-print-xml.$(OBJEXT) src/bison-print.$(OBJEXT) \
+ src/bison-reader.$(OBJEXT) src/bison-reduce.$(OBJEXT) \
+ src/bison-relation.$(OBJEXT) src/bison-scan-code-c.$(OBJEXT) \
src/bison-scan-gram-c.$(OBJEXT) \
src/bison-scan-skel-c.$(OBJEXT) src/bison-state.$(OBJEXT) \
src/bison-symlist.$(OBJEXT) src/bison-symtab.$(OBJEXT) \
@@ -878,6 +878,7 @@ am__depfiles_remade = examples/c++/$(DEPDIR)/simple-simple.Po \
src/$(DEPDIR)/bison-named-ref.Po \
src/$(DEPDIR)/bison-nullable.Po src/$(DEPDIR)/bison-output.Po \
src/$(DEPDIR)/bison-parse-gram.Po \
+ src/$(DEPDIR)/bison-pathtools.Po \
src/$(DEPDIR)/bison-print-graph.Po \
src/$(DEPDIR)/bison-print-xml.Po src/$(DEPDIR)/bison-print.Po \
src/$(DEPDIR)/bison-reader.Po src/$(DEPDIR)/bison-reduce.Po \
@@ -3169,6 +3170,8 @@ src_bison_SOURCES = \
src/output.c \
src/output.h \
src/parse-gram.y \
+ src/pathtools.c \
+ src/pathtools.h \
src/print-graph.c \
src/print-graph.h \
src/print-xml.c \
@@ -3992,6 +3995,8 @@ src/bison-output.$(OBJEXT): src/$(am__dirstamp) \
src/$(DEPDIR)/$(am__dirstamp)
src/bison-parse-gram.$(OBJEXT): src/$(am__dirstamp) \
src/$(DEPDIR)/$(am__dirstamp)
+src/bison-pathtools.$(OBJEXT): src/$(am__dirstamp) \
+ src/$(DEPDIR)/$(am__dirstamp)
src/bison-print-graph.$(OBJEXT): src/$(am__dirstamp) \
src/$(DEPDIR)/$(am__dirstamp)
src/bison-print-xml.$(OBJEXT): src/$(am__dirstamp) \
@@ -4317,6 +4322,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-nullable.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-output.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-parse-gram.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-pathtools.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-print-graph.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-print-xml.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@src/$(DEPDIR)/bison-print.Po@am__quote@ # am--include-marker
@@ -7283,6 +7289,20 @@ src/bison-parse-gram.obj: src/parse-gram.c
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_bison_CPPFLAGS) $(CPPFLAGS) $(src_bison_CFLAGS) $(CFLAGS) -c -o src/bison-parse-gram.obj `if test -f 'src/parse-gram.c'; then $(CYGPATH_W) 'src/parse-gram.c'; else $(CYGPATH_W) '$(srcdir)/src/parse-gram.c'; fi`
+src/bison-pathtools.o: src/pathtools.c
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_bison_CPPFLAGS) $(CPPFLAGS) $(src_bison_CFLAGS) $(CFLAGS) -MT src/bison-pathtools.o -MD -MP -MF src/$(DEPDIR)/bison-pathtools.Tpo -c -o src/bison-pathtools.o `test -f 'src/pathtools.c' || echo '$(srcdir)/'`src/pathtools.c
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) src/$(DEPDIR)/bison-pathtools.Tpo src/$(DEPDIR)/bison-pathtools.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ $(AM_V_CC)source='src/pathtools.c' object='src/bison-pathtools.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_bison_CPPFLAGS) $(CPPFLAGS) $(src_bison_CFLAGS) $(CFLAGS) -c -o src/bison-pathtools.o `test -f 'src/pathtools.c' || echo '$(srcdir)/'`src/pathtools.c
+
+src/bison-pathtools.obj: src/pathtools.c
+@am__fastdepCC_TRUE@ $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_bison_CPPFLAGS) $(CPPFLAGS) $(src_bison_CFLAGS) $(CFLAGS) -MT src/bison-pathtools.obj -MD -MP -MF src/$(DEPDIR)/bison-pathtools.Tpo -c -o src/bison-pathtools.obj `if test -f 'src/pathtools.c'; then $(CYGPATH_W) 'src/pathtools.c'; else $(CYGPATH_W) '$(srcdir)/src/pathtools.c'; fi`
+@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) src/$(DEPDIR)/bison-pathtools.Tpo src/$(DEPDIR)/bison-pathtools.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ $(AM_V_CC)source='src/pathtools.c' object='src/bison-pathtools.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_bison_CPPFLAGS) $(CPPFLAGS) $(src_bison_CFLAGS) $(CFLAGS) -c -o src/bison-pathtools.obj `if test -f 'src/pathtools.c'; then $(CYGPATH_W) 'src/pathtools.c'; else $(CYGPATH_W) '$(srcdir)/src/pathtools.c'; fi`
+
src/bison-print-graph.o: src/print-graph.c
@am__fastdepCC_TRUE@ $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_bison_CPPFLAGS) $(CPPFLAGS) $(src_bison_CFLAGS) $(CFLAGS) -MT src/bison-print-graph.o -MD -MP -MF src/$(DEPDIR)/bison-print-graph.Tpo -c -o src/bison-print-graph.o `test -f 'src/print-graph.c' || echo '$(srcdir)/'`src/print-graph.c
@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) src/$(DEPDIR)/bison-print-graph.Tpo src/$(DEPDIR)/bison-print-graph.Po
@@ -9079,6 +9099,7 @@ distclean: distclean-recursive
-rm -f src/$(DEPDIR)/bison-nullable.Po
-rm -f src/$(DEPDIR)/bison-output.Po
-rm -f src/$(DEPDIR)/bison-parse-gram.Po
+ -rm -f src/$(DEPDIR)/bison-pathtools.Po
-rm -f src/$(DEPDIR)/bison-print-graph.Po
-rm -f src/$(DEPDIR)/bison-print-xml.Po
-rm -f src/$(DEPDIR)/bison-print.Po
@@ -9464,6 +9485,7 @@ maintainer-clean: maintainer-clean-recursive
-rm -f src/$(DEPDIR)/bison-nullable.Po
-rm -f src/$(DEPDIR)/bison-output.Po
-rm -f src/$(DEPDIR)/bison-parse-gram.Po
+ -rm -f src/$(DEPDIR)/bison-pathtools.Po
-rm -f src/$(DEPDIR)/bison-print-graph.Po
-rm -f src/$(DEPDIR)/bison-print-xml.Po
-rm -f src/$(DEPDIR)/bison-print.Po
--- src/files.c
+++ src/files.c
@@ -1,4 +1,5 @@
/* Open and close files for Bison.
+ rse-gram.Po
Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2020 Free
Software Foundation, Inc.
@@ -35,6 +36,7 @@
#include "files.h"
#include "getargs.h"
#include "gram.h"
+#include "pathtools.h"
/* Initializing some values below (such SPEC_NAME_PREFIX to 'yy') is
tempting, but don't do that: for the time being our handling of the
@@ -417,7 +419,11 @@ pkgdatadir (void)
else
{
char const *cp = getenv ("BISON_PKGDATADIR");
- return cp ? cp : relocate2 (PKGDATADIR, &relocate_buffer);
+ if (cp) {
+ return cp;
+ }
+ const char *_dir = single_path_relocation(BINDIR, PKGDATADIR);
+ return _dir;
}
}
--- src/local.mk
+++ src/local.mk
@@ -71,6 +71,8 @@ src_bison_SOURCES = \
src/output.c \
src/output.h \
src/parse-gram.y \
+ src/pathtools.c \
+ src/pathtools.h \
src/print-graph.c \
src/print-graph.h \
src/print-xml.c \
--- src/output.c
+++ src/output.c
@@ -21,6 +21,7 @@
#include <config.h>
#include "system.h"
+#include <configmake.h>
#include <filename.h> /* IS_PATH_WITH_DIR */
#include <get-errno.h>
#include <path-join.h>
@@ -41,6 +42,7 @@
#include "scan-skel.h"
#include "symtab.h"
#include "tables.h"
+#include "pathtools.h"
static struct obstack format_obstack;
@@ -573,7 +575,7 @@ static void
output_skeleton (void)
{
/* Compute the names of the package data dir and skeleton files. */
- char const *m4 = (m4 = getenv ("M4")) ? m4 : M4;
+ char const *m4 = (m4 = getenv ("M4")) ? m4 : "m4" EXEEXT; //single_path_relocation(BINDIR, M4);
char const *datadir = pkgdatadir ();
char *skeldir = xpath_join (datadir, "skeletons");
char *m4sugar = xpath_join (datadir, "m4sugar/m4sugar.m4");
--- /dev/null
+++ src/pathtools.c
@@ -0,0 +1,536 @@
+/*
+ .Some useful path tools.
+ .ASCII only for now.
+ .Written by Ray Donnelly in 2014.
+ .Licensed under CC0 (and anything.
+ .else you need to license it under).
+ .No warranties whatsoever.
+ .email: <mingw.android@gmail.com>.
+ */
+
+#include "config.h"
+#if defined(__APPLE__)
+#include <stdlib.h>
+#else
+#include <stddef.h>
+#include <malloc.h>
+#endif
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#if defined(__linux__)
+#include <alloca.h>
+#endif
+#include <unistd.h>
+
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
+/* If you don't define this, then get_executable_path()
+ can only use argv[0] which will often not work well */
+#define IMPLEMENT_SYS_GET_EXECUTABLE_PATH
+
+#if defined(IMPLEMENT_SYS_GET_EXECUTABLE_PATH)
+#if defined(__linux__)
+/* Nothing needed, unistd.h is enough. */
+#elif defined(__APPLE__)
+#include <mach-o/dyld.h>
+#elif defined(_WIN32)
+#define WIN32_MEAN_AND_LEAN
+#include <windows.h>
+#include <psapi.h>
+#endif
+#endif /* defined(IMPLEMENT_SYS_GET_EXECUTABLE_PATH) */
+
+#include "pathtools.h"
+
+char *
+malloc_copy_string(char const * original)
+{
+ char * result = (char *) malloc (sizeof (char*) * strlen (original)+1);
+ if (result != NULL)
+ {
+ strcpy (result, original);
+ }
+ return result;
+}
+
+void
+sanitise_path(char * path)
+{
+ size_t path_size = strlen (path);
+
+ /* Replace any '\' with '/' */
+ char * path_p = path;
+ while ((path_p = strchr (path_p, '\\')) != NULL)
+ {
+ *path_p = '/';
+ }
+ /* Replace any '//' with '/' */
+ path_p = path;
+ while ((path_p = strstr (path_p, "//")) != NULL)
+ {
+ memmove (path_p, path_p + 1, path_size--);
+ }
+ return;
+}
+
+char *
+get_relative_path(char const * from_in, char const * to_in)
+{
+ size_t from_size = (from_in == NULL) ? 0 : strlen (from_in);
+ size_t to_size = (to_in == NULL) ? 0 : strlen (to_in);
+ size_t max_size = (from_size + to_size) * 2 + 4;
+ char * scratch_space = (char *) alloca (from_size + 1 + to_size + 1 + max_size + max_size);
+ char * from;
+ char * to;
+ char * common_part;
+ char * result;
+ size_t count;
+
+ /* No to, return "./" */
+ if (to_in == NULL)
+ {
+ return malloc_copy_string ("./");
+ }
+
+ /* If alloca failed or no from was given return a copy of to */
+ if ( from_in == NULL
+ || scratch_space == NULL )
+ {
+ return malloc_copy_string (to_in);
+ }
+
+ from = scratch_space;
+ strcpy (from, from_in);
+ to = from + from_size + 1;
+ strcpy (to, to_in);
+ common_part = to + to_size + 1;
+ result = common_part + max_size;
+ simplify_path (from);
+ simplify_path (to);
+
+ result[0] = '\0';
+
+ size_t match_size_dirsep = 0; /* The match size up to the last /. Always wind back to this - 1 */
+ size_t match_size = 0; /* The running (and final) match size. */
+ size_t largest_size = (from_size > to_size) ? from_size : to_size;
+ int to_final_is_slash = (to[to_size-1] == '/') ? 1 : 0;
+ char from_c;
+ char to_c;
+ for (match_size = 0; match_size < largest_size; ++match_size)
+ {
+ /* To simplify the logic, always pretend the strings end with '/' */
+ from_c = (match_size < from_size) ? from[match_size] : '/';
+ to_c = (match_size < to_size) ? to[match_size] : '/';
+
+ if (from_c != to_c)
+ {
+ if (from_c != '\0' || to_c != '\0')
+ {
+ match_size = match_size_dirsep;
+ }
+ break;
+ }
+ else if (from_c == '/')
+ {
+ match_size_dirsep = match_size;
+ }
+ }
+ strncpy (common_part, from, match_size);
+ common_part[match_size] = '\0';
+ from += match_size;
+ to += match_size;
+ size_t ndotdots = 0;
+ char const* from_last = from + strlen(from) - 1;
+ while ((from = strchr (from, '/')) && from != from_last)
+ {
+ ++ndotdots;
+ ++from;
+ }
+ for (count = 0; count < ndotdots; ++count)
+ {
+ strcat(result, "../");
+ }
+ if (strlen(to) > 0)
+ {
+ strcat(result, to+1);
+ }
+ /* Make sure that if to ends with '/' result does the same, and
+ vice-versa. */
+ size_t size_result = strlen(result);
+ if ((to_final_is_slash == 1)
+ && (!size_result || result[size_result-1] != '/'))
+ {
+ strcat (result, "/");
+ }
+ else if (!to_final_is_slash
+ && size_result && result[size_result-1] == '/')
+ {
+ result[size_result-1] = '\0';
+ }
+
+ return malloc_copy_string (result);
+}
+
+void
+simplify_path(char * path)
+{
+ ssize_t n_toks = 1; /* in-case we need an empty initial token. */
+ ssize_t i, j;
+ size_t tok_size;
+ size_t in_size = strlen (path);
+ int it_ended_with_a_slash = (path[in_size - 1] == '/') ? 1 : 0;
+ char * result = path;
+ sanitise_path(result);
+ char * result_p = result;
+
+ do
+ {
+ ++n_toks;
+ ++result_p;
+ } while ((result_p = strchr (result_p, '/')) != NULL);
+
+ result_p = result;
+ char ** toks = (char **) alloca (sizeof (char const*) * n_toks);
+ n_toks = 0;
+ do
+ {
+ if (result_p > result)
+ {
+ *result_p++ = '\0';
+ }
+ else if (*result_p == '/')
+ {
+ /* A leading / creates an empty initial token. */
+ toks[n_toks++] = result_p;
+ *result_p++ = '\0';
+ }
+ toks[n_toks++] = result_p;
+ } while ((result_p = strchr (result_p, '/')) != NULL);
+
+ /* Remove all non-leading '.' and any '..' we can match
+ with an earlier forward path (i.e. neither '.' nor '..') */
+ for (i = 1; i < n_toks; ++i)
+ {
+ int removals[2] = { -1, -1 };
+ if ( strcmp (toks[i], "." ) == 0)
+ {
+ removals[0] = i;
+ }
+ else if ( strcmp (toks[i], ".." ) == 0)
+ {
+ /* Search backwards for a forward path to collapse.
+ If none are found then the .. also stays. */
+ for (j = i - 1; j > -1; --j)
+ {
+ if ( strcmp (toks[j], "." )
+ && strcmp (toks[j], ".." ) )
+ {
+ removals[0] = j;
+ removals[1] = i;
+ break;
+ }
+ }
+ }
+ for (j = 0; j < 2; ++j)
+ {
+ if (removals[j] >= 0) /* Can become -2 */
+ {
+ --n_toks;
+ memmove (&toks[removals[j]], &toks[removals[j]+1], (n_toks - removals[j])*sizeof (char*));
+ --i;
+ if (!j)
+ {
+ --removals[1];
+ }
+ }
+ }
+ }
+ result_p = result;
+ for (i = 0; i < n_toks; ++i)
+ {
+ tok_size = strlen(toks[i]);
+ memcpy (result_p, toks[i], tok_size);
+ result_p += tok_size;
+ if ((!i || tok_size) && ((i < n_toks - 1) || it_ended_with_a_slash == 1))
+ {
+ *result_p = '/';
+ ++result_p;
+ }
+ }
+ *result_p = '\0';
+}
+
+/* Returns actual_to by calculating the relative path from -> to and
+ applying that to actual_from. An assumption that actual_from is a
+ dir is made, and it may or may not end with a '/' */
+char const *
+get_relocated_path (char const * from, char const * to, char const * actual_from)
+{
+ char const * relative_from_to = get_relative_path (from, to);
+ char * actual_to = (char *) malloc (strlen(actual_from) + 2 + strlen(relative_from_to));
+ return actual_to;
+}
+
+int
+get_executable_path(char const * argv0, char * result, ssize_t max_size)
+{
+ char * system_result = (char *) alloca (max_size);
+ ssize_t system_result_size = -1;
+ ssize_t result_size = -1;
+
+ if (system_result != NULL)
+ {
+#if defined(IMPLEMENT_SYS_GET_EXECUTABLE_PATH)
+#if defined(__linux__)
+ system_result_size = readlink("/proc/self/exe", system_result, max_size);
+#elif defined(__APPLE__)
+ uint32_t bufsize = (uint32_t)max_size;
+ if (_NSGetExecutablePath(system_result, &bufsize) == 0)
+ {
+ system_result_size = (ssize_t)bufsize;
+ }
+#elif defined(_WIN32)
+ unsigned long bufsize = (unsigned long)max_size;
+ system_result_size = GetModuleFileNameA(NULL, system_result, bufsize);
+ if (system_result_size == 0 || system_result_size == (ssize_t)bufsize)
+ {
+ /* Error, possibly not enough space. */
+ system_result_size = -1;
+ }
+ else
+ {
+ /* Early conversion to unix slashes instead of more changes
+ everywhere else .. */
+ char * winslash;
+ system_result[system_result_size] = '\0';
+ while ((winslash = strchr (system_result, '\\')) != NULL)
+ {
+ *winslash = '/';
+ }
+ }
+#else
+#warning "Don't know how to get executable path on this system"
+#endif
+#endif /* defined(IMPLEMENT_SYS_GET_EXECUTABLE_PATH) */
+ }
+ /* Use argv0 as a default in-case of failure */
+ if (system_result_size != -1)
+ {
+ strncpy (result, system_result, system_result_size);
+ result[system_result_size] = '\0';
+ }
+ else
+ {
+ if (argv0 != NULL)
+ {
+ strncpy (result, argv0, max_size);
+ result[max_size-1] = '\0';
+ }
+ else
+ {
+ result[0] = '\0';
+ }
+ }
+ result_size = strlen (result);
+ return result_size;
+}
+
+char const *
+strip_n_prefix_folders(char const * path, size_t n)
+{
+ if (path == NULL)
+ {
+ return NULL;
+ }
+
+ if (path[0] != '/')
+ {
+ return path;
+ }
+
+ char const * last = path;
+ while (n-- && path != NULL)
+ {
+ last = path;
+ path = strchr (path + 1, '/');
+ }
+ return (path == NULL) ? last : path;
+}
+
+void
+strip_n_suffix_folders(char * path, size_t n)
+{
+ if (path == NULL)
+ {
+ return;
+ }
+ while (n--)
+ {
+ if (strrchr (path + 1, '/'))
+ {
+ *strrchr (path + 1, '/') = '\0';
+ }
+ else
+ {
+ return;
+ }
+ }
+ return;
+}
+
+size_t
+split_path_list(char const * path_list, char split_char, char *** arr)
+{
+ size_t path_count;
+ size_t path_list_size;
+ char const * path_list_p;
+
+ path_list_p = path_list;
+ if (path_list == NULL || path_list[0] == '\0')
+ {
+ return 0;
+ }
+ path_list_size = strlen (path_list);
+
+ path_count = 0;
+ do
+ {
+ ++path_count;
+ ++path_list_p;
+ }
+ while ((path_list_p = strchr (path_list_p, split_char)) != NULL);
+
+ /* allocate everything in one go. */
+ char * all_memory = (char *) malloc (sizeof (char *) * path_count + strlen(path_list) + 1);
+ if (all_memory == NULL)
+ return 0;
+ *arr = (char **)all_memory;
+ all_memory += sizeof (char *) * path_count;
+
+ path_count = 0;
+ path_list_p = path_list;
+ char const * next_path_list_p = 0;
+ do
+ {
+ next_path_list_p = strchr (path_list_p, split_char);
+ if (next_path_list_p != NULL)
+ {
+ ++next_path_list_p;
+ }
+ size_t this_size = (next_path_list_p != NULL)
+ ? next_path_list_p - path_list_p - 1
+ : &path_list[path_list_size] - path_list_p;
+ memcpy (all_memory, path_list_p, this_size);
+ all_memory[this_size] = '\0';
+ (*arr)[path_count++] = all_memory;
+ all_memory += this_size + 1;
+ } while ((path_list_p = next_path_list_p) != NULL);
+
+ return path_count;
+}
+
+char *
+get_relocated_path_list(char const * from, char const * to_path_list)
+{
+ char exe_path[32768];
+ char * temp;
+ get_executable_path (NULL, &exe_path[0], sizeof (exe_path) / sizeof (exe_path[0]));
+ if ((temp = strrchr (exe_path, '/')) != NULL)
+ {
+ temp[1] = '\0';
+ }
+
+ char **arr = NULL;
+ /* Ask Alexey why he added this. Are we not 100% sure
+ that we're dealing with unix paths here? */
+ char split_char = ':';
+ if (strchr (to_path_list, ';'))
+ {
+ split_char = ';';
+ }
+ size_t count = split_path_list (to_path_list, split_char, &arr);
+ int result_size = 1 + (count - 1); /* count - 1 is for ; delim. */
+ size_t exe_path_size = strlen (exe_path);
+ size_t i;
+ /* Space required is:
+ count * (exe_path_size + strlen (rel_to_datadir))
+ rel_to_datadir upper bound is:
+ (count * strlen (from)) + (3 * num_slashes (from))
+ + strlen(arr[i]) + 1.
+ .. pathalogically num_slashes (from) is strlen (from)
+ (from = ////////) */
+ size_t space_required = (count * (exe_path_size + 4 * strlen (from))) + count - 1;
+ for (i = 0; i < count; ++i)
+ {
+ space_required += strlen (arr[i]);
+ }
+ char * scratch = (char *) alloca (space_required);
+ if (scratch == NULL)
+ return NULL;
+ for (i = 0; i < count; ++i)
+ {
+ char * rel_to_datadir = get_relative_path (from, arr[i]);
+ scratch[0] = '\0';
+ arr[i] = scratch;
+ strcat (scratch, exe_path);
+ strcat (scratch, rel_to_datadir);
+ simplify_path (arr[i]);
+ size_t arr_i_size = strlen (arr[i]);
+ result_size += arr_i_size;
+ scratch = arr[i] + arr_i_size + 1;
+ }
+ char * result = (char *) malloc (result_size);
+ if (result == NULL)
+ {
+ return NULL;
+ }
+ result[0] = '\0';
+ for (i = 0; i < count; ++i)
+ {
+ strcat (result, arr[i]);
+ if (i != count-1)
+ {
+#if defined(_WIN32)
+ strcat (result, ";");
+#else
+ strcat (result, ":");
+#endif
+ }
+ }
+ free ((void*)arr);
+ return result;
+}
+
+char *
+single_path_relocation(const char *from, const char *to)
+{
+ char exe_path[PATH_MAX];
+ get_executable_path (NULL, &exe_path[0], sizeof(exe_path)/sizeof(exe_path[0]));
+ if (strrchr (exe_path, '/') != NULL)
+ {
+ strrchr (exe_path, '/')[1] = '\0';
+ }
+ char * rel_to_datadir = get_relative_path (from, to);
+ strcat (exe_path, rel_to_datadir);
+ simplify_path (&exe_path[0]);
+ return malloc_copy_string(exe_path);
+}
+
+char *
+pathlist_relocation(const char *from_path, const char *to_path_list)
+{
+ static char stored_path[PATH_MAX];
+ static int stored = 0;
+ if (stored == 0)
+ {
+ char const * relocated = get_relocated_path_list(from_path, to_path_list);
+ strncpy (stored_path, relocated, PATH_MAX);
+ stored_path[PATH_MAX-1] = '\0';
+ free ((void *)relocated);
+ stored = 1;
+ }
+ return stored_path;
+}
--- /dev/null
+++ src/pathtools.h
@@ -0,0 +1,53 @@
+/*
+ .Some useful path tools.
+ .ASCII only for now.
+ .Written by Ray Donnelly in 2014.
+ .Licensed under CC0 (and anything.
+ .else you need to license it under).
+ .No warranties whatsoever.
+ .email: <mingw.android@gmail.com>.
+ */
+
+#ifndef PATHTOOLS_H
+#define PATHTOOLS_H
+
+#include <unistd.h>
+#if defined(__APPLE__)
+#include <stdlib.h>
+#else
+#include <malloc.h>
+#endif
+#include <stdio.h>
+
+char * malloc_copy_string(char const * original);
+
+/* In-place replaces any '\' with '/' and any '//' with '/' */
+void sanitise_path(char * path);
+
+/* Uses a host OS specific function to determine the path of the executable,
+ if IMPLEMENT_SYS_GET_EXECUTABLE_PATH is defined, otherwise uses argv0. */
+int get_executable_path(char const * argv0, char * result, ssize_t max_size);
+
+/* Where possible, in-place removes occourances of '.' and 'path/..' */
+void simplify_path(char * path);
+
+/* Allocates (via malloc) and returns the path to get from from to to. */
+char * get_relative_path(char const * from, char const * to);
+
+size_t split_path_list(char const * path_list, char split_char, char *** arr);
+
+/* Advances path along by the amount that removes n prefix folders. */
+char const *
+strip_n_prefix_folders(char const * path, size_t n);
+
+/* NULL terminates path to remove n suffix folders. */
+void
+strip_n_suffix_folders(char * path, size_t n);
+
+char const * get_relocated_path (char const * from, char const * to, char const * actual_from);
+char * get_relocated_path_list(char const * from, char const * to_path_list);
+
+char * single_path_relocation(const char *from, const char *to);
+char * pathlist_relocation(const char *from_path, const char *to_path_list);
+
+#endif /* PATHTOOLS_H */
--
2.21.1
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