Adding upstream version 0.8.0.upstream/0.8.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 781 insertions, 0 deletions

diff --git a/third-party/mustach/AUTHORS b/third-party/mustach/AUTHORS
new file mode 100644
index 0000000..82d2fee
--- /dev/null
+++ b/third-party/mustach/AUTHORS
@@ -0,0 +1,15 @@
+Main author:
+ José Bollo <jobol@nonadev.net>
+
+Contributors:
+ Harold L Marzan
+ Atlas
+ Sami Kerola
+ Tomasz Sieprawski
+ Lailton Fernando Mariano
+
+Thanks to issue submitters:
+ Thierry Fournier
+ Dante Torres
+ Mark Bucciarelli
+ Paul Wisehart
diff --git a/third-party/mustach/LICENSE-2.0.txt b/third-party/mustach/LICENSE-2.0.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/third-party/mustach/LICENSE-2.0.txt
@@ -0,0 +1,202 @@
+
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diff --git a/third-party/mustach/README.md b/third-party/mustach/README.md
new file mode 100644
index 0000000..026fc87
--- /dev/null
+++ b/third-party/mustach/README.md
@@ -0,0 +1,117 @@
+Introduction to Mustach
+=======================
+
+`mustach` is a C implementation of the [mustache](http://mustache.github.io "main site for mustache") template library.
+
+The main site for `mustach` is on [gitlab](https://gitlab.com/jobol/mustach).
+
+The best way to use mustach is to copy the files **mustach.h** and **mustach.c**
+directly into your project and use it.
+
+The current source files are:
+
+- **mustach.c** core implementation of mustache in C
+- **mustach.h** header file for core definitions
+- **mustach-json-c.c** tiny json wrapper of mustach using [json-c](https://github.com/json-c/json-c)
+- **mustach-json-c.h** header file for using the tiny JSON wrapper
+- **mustach-tool.c** simple tool for applying template files to a JSON file
+
+The file **mustach-json-c.c** is the main example of use of **mustach** core
+and it is also a practical implementation that can be used. It uses the library
+json-c. (NOTE for Mac OS: available through homebrew).
+
+HELP REQUESTED TO GIVE EXAMPLE BASED ON OTHER LIBRARIES (ex: janson, ...).
+
+The tool **mustach** is build using `make`,  its usage is:
+
+    mustach json template [template]...
+
+It then outputs the result of applying the templates files to the JSON file.
+
+Portability
+===========
+
+Some system does not provide *open_memstream*. In that case, tell your
+prefered compiler to declare the preprocessor symbol **NO_OPEN_MEMSTREAM**.
+Example:
+
+	gcc -DNO_OPEN_MEMSTREAM
+
+Extensions
+==========
+
+By default, the current implementation provides the following extensions:
+
+Explicit Substitution
+---------------------
+
+This is a core extension implemented in file **mustach.c**.
+
+In somecases the name of the key used for substition begins with a
+character reserved for mustach: one of '#', '^', '/', '&', '{', '>' and '='.
+This extension introduces the special character ':' to explicitly
+tell mustach to just substitute the value. So ':' becomes a new special
+character.
+
+Value Testing
+-------------
+
+This is a tool extension implmented in file **mustach-json-c.c**.
+
+This extension allows you to test the value of the selected key.
+It is allowed to write key=value (matching test) or key=!value
+(not matching test) in any query.
+
+Removing Extensions
+-------------------
+
+When compiling mustach.c or mustach-json-c.c,
+extensions can be removed by defining macros
+using option -D.
+
+The possible macros are:
+
+- `NO_COLON_EXTENSION_FOR_MUSTACH`
+
+  This macro remove the ability to use colon (:)
+  as explicit command for variable substituion.
+  This extension allows to have name starting
+  with one of the mustach character :#^/&{=<
+
+- `NO_EQUAL_VALUE_EXTENSION_FOR_MUSTACH`
+
+  This macro allows the program to check the whether
+  the actual value is equal to an expected value.
+  This is useful in `{{#key=val}}` or `{{^key=val}}`
+  with the corresponding `{{/key=val}}`.
+  It can also be used in `{{key=val}}` but this
+  doesn't seem to be useful.
+
+- `NO_JSON_POINTER_EXTENSION_FOR_MUSTACH`
+
+  This macro removes the possible use of JSON pointers.
+  JSON pointers are defined in IETF RFC 6901.
+  If not set, any key starting with "/" is a JSON pointer.
+  This implies to use the colon to introduce keys.
+  So `NO_COLON_EXTENSION_FOR_MUSTACH` implies
+  `NO_JSON_POINTER_EXTENSION_FOR_MUSTACH`.
+  A special escaping is used for "=" signs when
+  values comparison is enabled: "~=" leaves "=" in the key.
+
+- `NO_ALLOW_EMPTY_TAG`
+
+  Generate the error MUSTACH_ERROR_EMPTY_TAG automatically.
+
+- NO_OBJECT_ITERATION_FOR_MUSTACH
+
+  Disable the object iteration extension. That extension allows
+  to iterate over the keys of an object. The iteration on object
+  is selected by using the selector `{{#key.*}}`. In the context
+  of iterating over object keys, the single key `{{*}}` returns the
+  key and `{{.}}` returns the value.
+
+- `NO_EXTENSION_FOR_MUSTACH`
+
+  This macro disables any current or future
+  extensions.
+
diff --git a/third-party/mustach/mustach.c b/third-party/mustach/mustach.c
new file mode 100644
index 0000000..830e72c
--- /dev/null
+++ b/third-party/mustach/mustach.c
@@ -0,0 +1,327 @@
+/*
+ Author: José Bollo <jobol@nonadev.net>
+ Author: José Bollo <jose.bollo@iot.bzh>
+
+ https://gitlab.com/jobol/mustach
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "mustach.h"
+
+#define NAME_LENGTH_MAX   1024
+#define DEPTH_MAX         256
+
+#if !defined(NO_OPEN_MEMSTREAM)
+static FILE *memfile_open(char **buffer, size_t *size)
+{
+	return open_memstream(buffer, size);
+}
+static void memfile_abort(FILE *file, char **buffer, size_t *size)
+{
+	fclose(file);
+	free(*buffer);
+	*buffer = NULL;
+	*size = 0;
+}
+static int memfile_close(FILE *file, char **buffer, size_t *size)
+{
+	int rc;
+
+	/* adds terminating null */
+	rc = fputc(0, file) ? MUSTACH_ERROR_SYSTEM : 0;
+	fclose(file);
+	if (rc == 0)
+		/* removes terminating null of the length */
+		(*size)--;
+	else {
+		free(*buffer);
+		*buffer = NULL;
+		*size = 0;
+	}
+	return rc;
+}
+#else
+static FILE *memfile_open(char **buffer, size_t *size)
+{
+	return tmpfile();
+}
+static void memfile_abort(FILE *file, char **buffer, size_t *size)
+{
+	fclose(file);
+	*buffer = NULL;
+	*size = 0;
+}
+static int memfile_close(FILE *file, char **buffer, size_t *size)
+{
+	int rc;
+	size_t s;
+	char *b;
+
+	s = (size_t)ftell(file);
+	b = malloc(s + 1);
+	if (b == NULL) {
+		rc = MUSTACH_ERROR_SYSTEM;
+		errno = ENOMEM;
+		s = 0;
+	} else {
+		rewind(file);
+		if (1 == fread(b, s, 1, file)) {
+			rc = 0;
+			b[s] = 0;
+		} else {
+			rc = MUSTACH_ERROR_SYSTEM;
+			free(b);
+			b = NULL;
+			s = 0;
+		}
+	}
+	*buffer = b;
+	*size = s;
+	return rc;
+}
+#endif
+
+static int getpartial(struct mustach_itf *itf, void *closure, const char *name, char **result)
+{
+	int rc;
+	FILE *file;
+	size_t size;
+
+	*result = NULL;
+	file = memfile_open(result, &size);
+	if (file == NULL)
+		rc = MUSTACH_ERROR_SYSTEM;
+	else {
+		rc = itf->put(closure, name, 0, file);
+		if (rc < 0)
+			memfile_abort(file, result, &size);
+		else
+			rc = memfile_close(file, result, &size);
+	}
+	return rc;
+}
+
+static int process(const char *template, struct mustach_itf *itf, void *closure, FILE *file, const char *opstr, const char *clstr)
+{
+	char name[NAME_LENGTH_MAX + 1], *partial, c, *tmp;
+	const char *beg, *term;
+	struct { const char *name, *again; size_t length; int emit, entered; } stack[DEPTH_MAX];
+	size_t oplen, cllen, len, l;
+	int depth, rc, emit;
+
+	emit = 1;
+	oplen = strlen(opstr);
+	cllen = strlen(clstr);
+	depth = 0;
+	for(;;) {
+		beg = strstr(template, opstr);
+		if (beg == NULL) {
+			/* no more mustach */
+			if (emit)
+				fwrite(template, strlen(template), 1, file);
+			return depth ? MUSTACH_ERROR_UNEXPECTED_END : 0;
+		}
+		if (emit)
+			fwrite(template, (size_t)(beg - template), 1, file);
+		beg += oplen;
+		term = strstr(beg, clstr);
+		if (term == NULL)
+			return MUSTACH_ERROR_UNEXPECTED_END;
+		template = term + cllen;
+		len = (size_t)(term - beg);
+		c = *beg;
+		switch(c) {
+		case '!':
+		case '=':
+			break;
+		case '{':
+			for (l = 0 ; clstr[l] == '}' ; l++);
+			if (clstr[l]) {
+				if (!len || beg[len-1] != '}')
+					return MUSTACH_ERROR_BAD_UNESCAPE_TAG;
+				len--;
+			} else {
+				if (term[l] != '}')
+					return MUSTACH_ERROR_BAD_UNESCAPE_TAG;
+				template++;
+			}
+			c = '&';
+			/*@fallthrough@*/
+		case '^':
+		case '#':
+		case '/':
+		case '&':
+		case '>':
+#if !defined(NO_EXTENSION_FOR_MUSTACH) && !defined(NO_COLON_EXTENSION_FOR_MUSTACH)
+		case ':':
+#endif
+			beg++; len--;
+		default:
+			while (len && isspace(beg[0])) { beg++; len--; }
+			while (len && isspace(beg[len-1])) len--;
+#if defined(NO_EXTENSION_FOR_MUSTACH) || defined(NO_ALLOW_EMPTY_TAG)
+			if (len == 0)
+				return MUSTACH_ERROR_EMPTY_TAG;
+#endif
+			if (len > NAME_LENGTH_MAX)
+				return MUSTACH_ERROR_TAG_TOO_LONG;
+			memcpy(name, beg, len);
+			name[len] = 0;
+			break;
+		}
+		switch(c) {
+		case '!':
+			/* comment */
+			/* nothing to do */
+			break;
+		case '=':
+			/* defines separators */
+			if (len < 5 || beg[len - 1] != '=')
+				return MUSTACH_ERROR_BAD_SEPARATORS;
+			beg++;
+			len -= 2;
+			for (l = 0; l < len && !isspace(beg[l]) ; l++);
+			if (l == len)
+				return MUSTACH_ERROR_BAD_SEPARATORS;
+			oplen = l;
+			tmp = alloca(oplen + 1);
+			memcpy(tmp, beg, oplen);
+			tmp[oplen] = 0;
+			opstr = tmp;
+			while (l < len && isspace(beg[l])) l++;
+			if (l == len)
+				return MUSTACH_ERROR_BAD_SEPARATORS;
+			cllen = len - l;
+			tmp = alloca(cllen + 1);
+			memcpy(tmp, beg + l, cllen);
+			tmp[cllen] = 0;
+			clstr = tmp;
+			break;
+		case '^':
+		case '#':
+			/* begin section */
+			if (depth == DEPTH_MAX)
+				return MUSTACH_ERROR_TOO_DEEP;
+			rc = emit;
+			if (rc) {
+				rc = itf->enter(closure, name);
+				if (rc < 0)
+					return rc;
+			}
+
+			if (template[0] == '\n')
+				++template;
+
+			stack[depth].name = beg;
+			stack[depth].again = template;
+			stack[depth].length = len;
+			stack[depth].emit = emit;
+			stack[depth].entered = rc;
+			if ((c == '#') == (rc == 0))
+				emit = 0;
+			depth++;
+			break;
+		case '/':
+			/* end section */
+			if (depth-- == 0 || len != stack[depth].length || memcmp(stack[depth].name, name, len))
+				return MUSTACH_ERROR_CLOSING;
+			rc = emit && stack[depth].entered ? itf->next(closure) : 0;
+			if (rc < 0)
+				return rc;
+			if (rc) {
+				template = stack[depth++].again;
+			} else {
+				emit = stack[depth].emit;
+				if (emit && stack[depth].entered)
+					itf->leave(closure);
+			}
+			break;
+		case '>':
+			/* partials */
+			if (emit) {
+				rc = getpartial(itf, closure, name, &partial);
+				if (rc == 0) {
+					rc = process(partial, itf, closure, file, opstr, clstr);
+					free(partial);
+				}
+				if (rc < 0)
+					return rc;
+			}
+			break;
+		default:
+			/* replacement */
+			if (emit) {
+				rc = itf->put(closure, name, c != '&', file);
+				if (rc < 0)
+					return rc;
+			}
+			break;
+		}
+	}
+}
+
+int fmustach(const char *template, struct mustach_itf *itf, void *closure, FILE *file)
+{
+	int rc = itf->start ? itf->start(closure) : 0;
+	if (rc == 0)
+		rc = process(template, itf, closure, file, "{{", "}}");
+	return rc;
+}
+
+int fdmustach(const char *template, struct mustach_itf *itf, void *closure, int fd)
+{
+	int rc;
+	FILE *file;
+
+	file = fdopen(fd, "w");
+	if (file == NULL) {
+		rc = MUSTACH_ERROR_SYSTEM;
+		errno = ENOMEM;
+	} else {
+		rc = fmustach(template, itf, closure, file);
+		fclose(file);
+	}
+	return rc;
+}
+
+int mustach(const char *template, struct mustach_itf *itf, void *closure, char **result, size_t *size)
+{
+	int rc;
+	FILE *file;
+	size_t s;
+
+	*result = NULL;
+	if (size == NULL)
+		size = &s;
+	file = memfile_open(result, size);
+	if (file == NULL)
+		rc = MUSTACH_ERROR_SYSTEM;
+	else {
+		rc = fmustach(template, itf, closure, file);
+		if (rc < 0)
+			memfile_abort(file, result, size);
+		else
+			rc = memfile_close(file, result, size);
+	}
+	return rc;
+}
+
diff --git a/third-party/mustach/mustach.h b/third-party/mustach/mustach.h
new file mode 100644
index 0000000..32288a1
--- /dev/null
+++ b/third-party/mustach/mustach.h
@@ -0,0 +1,120 @@
+/*
+ Author: José Bollo <jobol@nonadev.net>
+ Author: José Bollo <jose.bollo@iot.bzh>
+
+ https://gitlab.com/jobol/mustach
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#ifndef _mustach_h_included_
+#define _mustach_h_included_
+
+/**
+ * mustach_itf - interface for callbacks
+ *
+ * All of this function should return a negative value to stop
+ * the mustache processing. The returned negative value will be
+ * then returned to the caller of mustach as is.
+ *
+ * The functions enter and next should return 0 or 1.
+ *
+ * All other functions should normally return 0. If it returns
+ * a negative value, it means an error that stop the process
+ * and that is reported to the caller.
+ *
+ * @start: Starts the mustach processing of the closure
+ *         'start' is optional (can be NULL)
+ *
+ * @put: Writes the value of 'name' to 'file' with 'escape' or not
+ *       As an extension (see NO_ALLOW_EMPTY_TAG), the 'name' can be
+ *       the empty string. In that later case an implemntation can
+ *       return MUSTACH_ERROR_EMPTY_TAG to refuse empty names.
+ *
+ * @enter: Enters the section of 'name' if possible.
+ *         Musts return 1 if entered or 0 if not entered.
+ *         When 1 is returned, the function 'leave' will always be called.
+ *         Conversely 'leave' is never called when enter returns 0 or
+ *         a negative value.
+ *         When 1 is returned, the function must activate the first
+ *         item of the section.
+ *
+ * @next: Activates the next item of the section if it exists.
+ *        Musts return 1 when the next item is activated.
+ *        Musts return 0 when there is no item to activate.
+ *
+ * @leave: Leaves the last entered section
+ */
+struct mustach_itf {
+	int (*start)(void *closure);
+	int (*put)(void *closure, const char *name, int escape, FILE *file);
+	int (*enter)(void *closure, const char *name);
+	int (*next)(void *closure);
+	int (*leave)(void *closure);
+};
+
+#define MUSTACH_OK                       0
+#define MUSTACH_ERROR_SYSTEM            -1
+#define MUSTACH_ERROR_UNEXPECTED_END    -2
+#define MUSTACH_ERROR_EMPTY_TAG         -3
+#define MUSTACH_ERROR_TAG_TOO_LONG      -4
+#define MUSTACH_ERROR_BAD_SEPARATORS    -5
+#define MUSTACH_ERROR_TOO_DEEP          -6
+#define MUSTACH_ERROR_CLOSING           -7
+#define MUSTACH_ERROR_BAD_UNESCAPE_TAG  -8
+
+/* compatibility with older bad name */
+#define MUSTACH_ERROR_TOO_DEPTH         MUSTACH_ERROR_TOO_DEEP
+
+/**
+ * fmustach - Renders the mustache 'template' in 'file' for 'itf' and 'closure'.
+ *
+ * @template: the template string to instanciate
+ * @itf:      the interface to the functions that mustach calls
+ * @closure:  the closure to pass to functions called
+ * @file:     the file where to write the result
+ *
+ * Returns 0 in case of success, -1 with errno set in case of system error
+ * a other negative value in case of error.
+ */
+extern int fmustach(const char *template, struct mustach_itf *itf, void *closure, FILE *file);
+
+/**
+ * fmustach - Renders the mustache 'template' in 'fd' for 'itf' and 'closure'.
+ *
+ * @template: the template string to instanciate
+ * @itf:      the interface to the functions that mustach calls
+ * @closure:  the closure to pass to functions called
+ * @fd:       the file descriptor number where to write the result
+ *
+ * Returns 0 in case of success, -1 with errno set in case of system error
+ * a other negative value in case of error.
+ */
+extern int fdmustach(const char *template, struct mustach_itf *itf, void *closure, int fd);
+
+/**
+ * fmustach - Renders the mustache 'template' in 'result' for 'itf' and 'closure'.
+ *
+ * @template: the template string to instanciate
+ * @itf:      the interface to the functions that mustach calls
+ * @closure:  the closure to pass to functions called
+ * @result:   the pointer receiving the result when 0 is returned
+ * @size:     the size of the returned result
+ *
+ * Returns 0 in case of success, -1 with errno set in case of system error
+ * a other negative value in case of error.
+ */
+extern int mustach(const char *template, struct mustach_itf *itf, void *closure, char **result, size_t *size);
+
+#endif
+