Initial commit

.clang-format

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+AlignConsecutiveDeclarations: true
+AlignTrailingComments: true
+AlignAfterOpenBracket: DontAlign
+AllowShortIfStatementsOnASingleLine: false
+AlwaysBreakAfterReturnType: AllDefinitions
+AlwaysBreakBeforeMultilineStrings: true
+BreakBeforeBraces: Linux
+BreakBeforeBinaryOperators: false
+BreakBeforeTernaryOperators: true
+BreakStringLiterals: true
+ColumnLimit:     80
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+DerivePointerAlignment: false
+PointerAlignment: Right
+IndentCaseLabels: false
+MaxEmptyLinesToKeep: 2
+PointerBindsToType: false
+ReflowComments: false
+IndentWidth:     4
+TabWidth:        4
+UseTab:          Never
+BreakBeforeBraces: Attach
+IndentFunctionDeclarationAfterType: false
+SpacesInSquareBrackets: true
+SpacesInAngles:  false
+SpacesInCStyleCastParentheses: false
+SpaceAfterControlStatementKeyword: true
+SpaceBeforeAssignmentOperators: true
+ContinuationIndentWidth: 8

.gitignore

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+*.o
+.deps/
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache/
+compile
+config.h
+config.h.in
+config.h.in~
+config.log
+config.status
+configure
+depcomp
+ejq
+install-sh
+missing

COPYING

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+Copyright (c) 2023 Paul Arthur MacIain
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

COPYING.easy-json

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+Copyright (c) 2023, James W M Barford-Evans <jamesbarfordevans at gmail dot com>
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Makefile.am

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+AM_CFLAGS = -Wall
+
+bin_PROGRAMS = ejq
+
+ejq_SOURCES = json.c json.h json-selector.c json-selector.h ejq.c

README.md

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+This is a simple CLI wrapper around James Barford's
+[easy-json](https://github.com/Jamesbarford/easy-json) library.

configure.ac

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+AC_INIT([easy-json-q], [0.1], [[email protected]])
+AM_INIT_AUTOMAKE([-Wall -Werror foreign no-dist-gzip dist-xz])
+
+AC_PROG_CC
+AC_PROG_CC_C99
+AC_PROG_INSTALL
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT

ejq.c

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+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <json-selector.h>
+#include <json.h>
+
+char *
+read_file(const char *path) {
+    char *buffer;
+    int   fd = open(path, O_RDONLY, 0666);
+    if (fd == -1) {
+        fprintf(stderr, "Cannot access file %s", path);
+        exit(1);
+    }
+
+    long size = lseek(fd, 0, SEEK_END);
+    lseek(fd, 0, SEEK_SET);
+
+    buffer = calloc(sizeof(char), size);
+
+    if (read(fd, buffer, size) != size) {
+        fprintf(stderr, "Failed to read file %s: %m\n", path);
+        exit(1);
+    }
+
+    close(fd);
+    return buffer;
+}
+
+int
+main(int ac, char *av[]) {
+    int   c;
+    int   err = 0;
+    bool  raw = false;
+    char *expr = NULL;
+    char *fname = NULL;
+
+    while ((c = getopt(ac, av, "e:f:r")) != -1) {
+        switch (c) {
+        case 'e':
+            expr = optarg;
+            break;
+
+        case 'f':
+            fname = optarg;
+            break;
+
+        case 'r':
+            raw = true;
+            break;
+
+        default:
+            err++;
+        }
+    }
+
+    if (err || optind != ac) {
+        fprintf(stderr, "Usage:\t%s", av[ 0 ]);
+        fprintf(stderr, " -e <expression> -f <file> [-r]\n");
+        exit(1);
+    }
+
+    json *parsed = jsonParse(read_file(fname));
+    json *res = jsonSelect(parsed, expr);
+
+    if (jsonIsArray(res)) {
+        res = res->array;
+    } else if (jsonIsObject(res)) {
+        res = res->object;
+    }
+
+    if (raw) {
+
+    } else {
+        printf("%s", jsonToString(res, NULL));
+    }
+}