diff options
| -rw-r--r-- | src/args_parser.c | 98 | ||||
| -rw-r--r-- | src/args_parser.h | 31 | ||||
| -rw-r--r-- | src/geml.c | 34 | ||||
| -rw-r--r-- | src/io.c | 63 | ||||
| -rw-r--r-- | src/io.h | 48 | ||||
| -rw-r--r-- | src/utils.c | 66 | ||||
| -rw-r--r-- | src/utils.h | 54 |
7 files changed, 394 insertions, 0 deletions
diff --git a/src/args_parser.c b/src/args_parser.c new file mode 100644 index 0000000..be55e43 --- /dev/null +++ b/src/args_parser.c @@ -0,0 +1,98 @@ +/* geml - General extendable macro language + * args_parser.c Program arguments parser + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <getopt.h> +#include "args_parser.h" +#include "utils.h" +#include "io.h" + +const char *help_text = + "Usage: geml [OPTIONS]... INPUT_FILE\n" + " General extendable macro language processing tool.\n" + "\n" + "Options:\n" + " -v, --verbose\n" + " Increases vebosity of output.\n" + " -q, --quiet\n" + " Dcreases verbosity of output.\n" + " -o, --output OUTPUT_FILE\n" + " Sets file in which output is going to be stored\n" + " -h, --help\n" + " Prints this text.\n" + " --version\n" + " Prints geml version\n" + "\n" + "Report bugs to: <" GEML_CONTACT ">\n" + ; + +const char *version_text = "geml " GEML_VERSION "\n"; + +enum ARGS_ENUM { + ARGS_ENUM_VERSION = 260 +}; + +const struct option long_options[] = { + {"verbose", no_argument, NULL, 'v'}, + {"quiet", no_argument, NULL, 'q'}, + {"output", required_argument, NULL, 'o'}, + {"help", no_argument, NULL, 'h'}, + {"version", no_argument, NULL, ARGS_ENUM_VERSION} +}; + +bool args_parse(int argc, char *argv[]) { + char *output = NULL; + + int index = 1; + int c; + while((c = getopt_long(argc, argv, "vqo:h;", long_options, &index)) != -1) { + switch (c) { + case 'v': // verbose + verbosity_inc(); + break; + case 'q': // quiet + verbosity_dec(); + break; + case 'o': // output + output = optarg; + break; + case 'h': // help + fputs(help_text, stderr); + return true; + case ARGS_ENUM_VERSION: + fputs(version_text, stderr); + return true; + default: + abort(); + } + } + + if (optind < argc) { + if (!set_input(argv[optind])) + abort(); + if ((argc - optind) > 1) + WARN("Only first input file is accepted, rest is dropped."); + } + if (output != NULL && !set_output(output)) + abort(); + + return false; +} diff --git a/src/args_parser.h b/src/args_parser.h new file mode 100644 index 0000000..74967dc --- /dev/null +++ b/src/args_parser.h @@ -0,0 +1,31 @@ +/* geml - General extendable macro language + * args_parser.h Program arguments parser + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include <stdbool.h> + +#ifndef _ARGS_PARSE_ +#define _ARGS_PARSE_ + +/* Parse arguments from command line + * Arguments are as arguments as they are in main function + * Returns true if program should exit + */ +bool args_parse(int argc, char *argv[]); + +#endif /* _ARGS_PARSE_ */ diff --git a/src/geml.c b/src/geml.c new file mode 100644 index 0000000..cae4b52 --- /dev/null +++ b/src/geml.c @@ -0,0 +1,34 @@ +/* geml - General extendable macro language + * geml.c Main of geml + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> + +#include "utils.h" +#include "args_parser.h" +#include "io.h" + +int main(int argc, char *argv[]) { + io_init(); + if (args_parse(argc, argv)) + return 0; // Arguments parsing resulted to correct early exit of program + + return 0; +} diff --git a/src/io.c b/src/io.c new file mode 100644 index 0000000..3f35607 --- /dev/null +++ b/src/io.c @@ -0,0 +1,63 @@ +/* geml - General extendable macro language + * io.c Hadndles input and output for parser + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include "io.h" + +FILE *outf; +const char *outf_name; + +FILE *inf; +const char *inf_name; + +void io_init(void) { + outf = stdout; + outf_name = "stdout"; + inf = stdin; + inf_name = "stdin"; +} + +bool set_output(const char *file) { + FILE *f; + f = fopen(file, "w"); + if (f == NULL) { + ERROR("Output file \"%s\" couldn't be opened: %s", file, + strerror(errno)); + return false; + } + if (outf != stdout) + fclose(outf); + outf = f; + outf_name = file; + return true; +} + +bool set_input(const char *file) { + FILE *f; + f = fopen(file, "r"); + if (f == NULL) { + ERROR("Input file \"%s\" couldn't be opened: %s", file, + strerror(errno)); + return false; + } + if (inf != stdin) + fclose(inf); + inf = f; + inf_name = file; + return true; +} diff --git a/src/io.h b/src/io.h new file mode 100644 index 0000000..b03315a --- /dev/null +++ b/src/io.h @@ -0,0 +1,48 @@ +/* geml - General extendable macro language + * io.h Hadndles input and output for parser + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include <stdlib.h> +#include <stdio.h> +#include <errno.h> +#include <stdbool.h> +#include <string.h> + +#ifndef _IO_H_ +#define _IO_H_ +#include "utils.h" + +// Call this function as soon as possible after program start before outf or inf +// are used. +void io_init(void); + +// Current output file is closed and opens specified file. When NULL is passed, +// current file is closed and stdout is used. +bool set_output(const char *file) __attribute__ ((nonnull)); + +extern FILE *outf; +extern const char *outf_name; + +// Curent input file is closed and opens specified file. When NULL is passed, +// current file is closed and stdin is used. +bool set_input(const char *file) __attribute__ ((nonnull)); + +extern FILE *inf; +extern const char *inf_name; + +#endif /* _IO_H_ */ diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 0000000..3d91753 --- /dev/null +++ b/src/utils.c @@ -0,0 +1,66 @@ +/* geml - General extendable macro language + * utils.h Various utility functions + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include <stdio.h> +#include <stdarg.h> +#include "utils.h" + +static enum Verbosity verbosity = V_INFO; + +void verbosity_set(enum Verbosity level) { + if (level > V_DIE) + level = V_DIE; + else if (level < V_DEVEL) + level = V_DEVEL; + verbosity = level; +} + +void verbosity_inc(void) { + verbosity--; + verbosity_set(verbosity); +} + +void verbosity_dec(void) { + verbosity++; + verbosity_set(verbosity); +} + +// TODO colors if terminal supports them +static const char *v_name[] = { + "DEVEL", + "DEBUG", + "INFO", + "WARN", + "ERROR", + "DIE" +}; + +void print_message(const char *file, const int line, enum Verbosity level, const char *msg, ...) { + ASSERT(level <= V_DIE && level >= V_DEVEL); + if (level < verbosity) + return; + fputs(v_name[level + 2], stderr); + if (verbosity <= V_DEBUG) + fprintf(stderr, ":%s:%d", file, line); + fputs(":", stderr); + va_list args; + va_start(args, msg); + vfprintf(stderr, msg, args); + fputs("\n", stderr); +} diff --git a/src/utils.h b/src/utils.h new file mode 100644 index 0000000..f93992d --- /dev/null +++ b/src/utils.h @@ -0,0 +1,54 @@ +/* geml - General extendable macro language + * utils.h Various utility functions + * + * Copyright (C) 2016 Karel Kočí + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef _UTILS_H_ +#define _UTILS_H_ + +enum Verbosity { + V_DEVEL = -2, + V_DEBUG, + V_INFO, // = 0 + V_WARN, + V_ERROR, + V_DIE +}; + +// Sets verbosity level +void verbosity_set(enum Verbosity level); +void verbosity_inc(void); +void verbosity_dec(void); + +// Prints given message if it isn't lower than chosen verbosity level +void print_message(const char *file, const int line, enum Verbosity level, const char *msg, ...); +#define _PRINT_MESSAGE(LEVEL, ...) print_message(__FILE__, __LINE__, LEVEL, __VA_ARGS__) +#define DIE(...) do { _PRINT_MESSAGE(V_DIE, __VA_ARGS__); abort(); } while(0) +#define ERROR(...) _PRINT_MESSAGE(V_ERROR, __VA_ARGS__) +#define WARN(...) _PRINT_MESSAGE(V_WARN, __VA_ARGS__) +#define INFO(...) _PRINT_MESSAGE(V_INFO, __VA_ARGS__) +#define DBG(...) _PRINT_MESSAGE(V_DEBUG, __VA_ARGS__) +#ifdef DEBUG +#define DVL(...) _PRINT_MESSAGE(V_DEVEL, __VA_ARGS__) +#else /* DEBUG */ +#define DEVEL(...) +#endif /* DEBUG */ + +#define ASSERT(CHECK) do { if (!(CHECK)) { printf("Assertion failed on %s:%d\n", __FILE__, __LINE__); } } while(0) + +#endif /* _UTILS_H_ */ |