[270] | 1 | /*
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| 2 | * apilist.c
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| 3 | */
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| 4 |
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| 5 | #include <ctype.h>
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| 6 | #include <stdlib.h>
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| 7 | #include <string.h>
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| 8 |
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| 9 | #include "mrdb.h"
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| 10 | #include "mrdberror.h"
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| 11 | #include "apilist.h"
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[331] | 12 | #include <mruby/compile.h>
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| 13 | #include <mruby/irep.h>
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| 14 | #include <mruby/debug.h>
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[270] | 15 |
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| 16 | #define LINE_BUF_SIZE MAX_COMMAND_LINE
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| 17 |
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| 18 | typedef struct source_file {
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| 19 | char *path;
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| 20 | uint16_t lineno;
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| 21 | FILE *fp;
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| 22 | } source_file;
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| 23 |
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| 24 | static void
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| 25 | source_file_free(mrb_state *mrb, source_file *file)
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| 26 | {
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| 27 | if (file != NULL) {
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| 28 | if (file->path != NULL) {
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| 29 | mrb_free(mrb, file->path);
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| 30 | }
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| 31 | if (file->fp != NULL) {
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| 32 | fclose(file->fp);
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| 33 | file->fp = NULL;
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| 34 | }
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| 35 | mrb_free(mrb, file);
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| 36 | }
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| 37 | }
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| 38 |
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| 39 | static char*
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| 40 | build_path(mrb_state *mrb, const char *dir, const char *base)
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| 41 | {
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| 42 | int len;
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| 43 | char *path = NULL;
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| 44 |
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| 45 | len = strlen(base) + 1;
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| 46 |
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| 47 | if (strcmp(dir, ".")) {
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| 48 | len += strlen(dir) + sizeof("/") - 1;
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| 49 | }
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| 50 |
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[439] | 51 | path = (char*)mrb_malloc(mrb, len);
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[270] | 52 | memset(path, 0, len);
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| 53 |
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| 54 | if (strcmp(dir, ".")) {
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| 55 | strcat(path, dir);
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| 56 | strcat(path, "/");
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| 57 | }
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| 58 | strcat(path, base);
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| 59 |
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| 60 | return path;
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| 61 | }
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| 62 |
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| 63 | static char*
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| 64 | dirname(mrb_state *mrb, const char *path)
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| 65 | {
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| 66 | size_t len;
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[439] | 67 | const char *p;
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| 68 | char *dir;
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[270] | 69 |
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| 70 | if (path == NULL) {
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| 71 | return NULL;
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| 72 | }
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| 73 |
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| 74 | p = strrchr(path, '/');
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[331] | 75 | len = p != NULL ? (size_t)(p - path) : strlen(path);
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[270] | 76 |
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[439] | 77 | dir = (char*)mrb_malloc(mrb, len + 1);
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[270] | 78 | strncpy(dir, path, len);
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| 79 | dir[len] = '\0';
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| 80 |
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| 81 | return dir;
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| 82 | }
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| 83 |
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| 84 | static source_file*
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| 85 | source_file_new(mrb_state *mrb, mrb_debug_context *dbg, char *filename)
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| 86 | {
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[439] | 87 | source_file *file;
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[270] | 88 |
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[439] | 89 | file = (source_file*)mrb_malloc(mrb, sizeof(source_file));
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[270] | 90 |
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| 91 | memset(file, '\0', sizeof(source_file));
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| 92 | file->fp = fopen(filename, "rb");
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| 93 |
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| 94 | if (file->fp == NULL) {
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| 95 | source_file_free(mrb, file);
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| 96 | return NULL;
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| 97 | }
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| 98 |
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| 99 | file->lineno = 1;
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[439] | 100 | file->path = (char*)mrb_malloc(mrb, strlen(filename) + 1);
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[270] | 101 | strcpy(file->path, filename);
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| 102 | return file;
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| 103 | }
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| 104 |
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| 105 | static mrb_bool
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| 106 | remove_newlines(char *s, FILE *fp)
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| 107 | {
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| 108 | int c;
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| 109 | char *p;
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| 110 | size_t len;
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| 111 |
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| 112 | if ((len = strlen(s)) == 0) {
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| 113 | return FALSE;
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| 114 | }
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| 115 |
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| 116 | p = s + len - 1;
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| 117 |
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| 118 | if (*p != '\r' && *p != '\n') {
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| 119 | return FALSE;
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| 120 | }
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| 121 |
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| 122 | if (*p == '\r') {
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| 123 | /* peek the next character and skip '\n' */
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| 124 | if ((c = fgetc(fp)) != '\n') {
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| 125 | ungetc(c, fp);
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| 126 | }
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| 127 | }
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| 128 |
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| 129 | /* remove trailing newline characters */
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| 130 | while (s <= p && (*p == '\r' || *p == '\n')) {
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| 131 | *p-- = '\0';
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| 132 | }
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| 133 |
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| 134 | return TRUE;
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| 135 | }
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| 136 |
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| 137 | static void
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| 138 | show_lines(source_file *file, uint16_t line_min, uint16_t line_max)
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| 139 | {
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| 140 | char buf[LINE_BUF_SIZE];
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| 141 | int show_lineno = 1, found_newline = 0, is_printed = 0;
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| 142 |
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| 143 | if (file->fp == NULL) {
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| 144 | return;
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| 145 | }
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| 146 |
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| 147 | while (fgets(buf, sizeof(buf), file->fp) != NULL) {
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| 148 | found_newline = remove_newlines(buf, file->fp);
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| 149 |
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| 150 | if (line_min <= file->lineno) {
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| 151 | if (show_lineno) {
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| 152 | printf("%-8d", file->lineno);
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| 153 | }
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| 154 | show_lineno = found_newline;
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| 155 | printf(found_newline ? "%s\n" : "%s", buf);
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| 156 | is_printed = 1;
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| 157 | }
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| 158 |
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| 159 | if (found_newline) {
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| 160 | if (line_max < ++file->lineno) {
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| 161 | break;
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| 162 | }
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| 163 | }
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| 164 | }
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| 165 |
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| 166 | if (is_printed && !found_newline) {
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| 167 | printf("\n");
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| 168 | }
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| 169 | }
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| 170 |
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| 171 | char*
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| 172 | mrb_debug_get_source(mrb_state *mrb, mrdb_state *mrdb, const char *srcpath, const char *filename)
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| 173 | {
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| 174 | int i;
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| 175 | FILE *fp;
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| 176 | const char *search_path[3];
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| 177 | char *path = NULL;
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[439] | 178 | const char *srcname = strrchr(filename, '/');
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[270] | 179 |
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[439] | 180 | if (srcname) srcname++;
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| 181 | else srcname = filename;
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| 182 |
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[270] | 183 | search_path[0] = srcpath;
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[439] | 184 | search_path[1] = dirname(mrb, mrb_debug_get_filename(mrb, mrdb->dbg->irep, 0));
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[270] | 185 | search_path[2] = ".";
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| 186 |
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| 187 | for (i = 0; i < 3; i++) {
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| 188 | if (search_path[i] == NULL) {
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| 189 | continue;
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| 190 | }
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| 191 |
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[439] | 192 | if ((path = build_path(mrb, search_path[i], srcname)) == NULL) {
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[270] | 193 | continue;
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| 194 | }
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| 195 |
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| 196 | if ((fp = fopen(path, "rb")) == NULL) {
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| 197 | mrb_free(mrb, path);
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| 198 | path = NULL;
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| 199 | continue;
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| 200 | }
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| 201 | fclose(fp);
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| 202 | break;
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| 203 | }
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| 204 |
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| 205 | mrb_free(mrb, (void *)search_path[1]);
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| 206 |
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| 207 | return path;
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| 208 | }
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| 209 |
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| 210 | int32_t
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| 211 | mrb_debug_list(mrb_state *mrb, mrb_debug_context *dbg, char *filename, uint16_t line_min, uint16_t line_max)
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| 212 | {
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| 213 | char *ext;
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| 214 | source_file *file;
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| 215 |
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| 216 | if (mrb == NULL || dbg == NULL || filename == NULL) {
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| 217 | return MRB_DEBUG_INVALID_ARGUMENT;
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| 218 | }
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| 219 |
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| 220 | ext = strrchr(filename, '.');
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| 221 |
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| 222 | if (ext == NULL || strcmp(ext, ".rb")) {
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| 223 | printf("List command only supports .rb file.\n");
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| 224 | return MRB_DEBUG_INVALID_ARGUMENT;
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| 225 | }
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| 226 |
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| 227 | if (line_min > line_max) {
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| 228 | return MRB_DEBUG_INVALID_ARGUMENT;
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| 229 | }
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| 230 |
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| 231 | if ((file = source_file_new(mrb, dbg, filename)) != NULL) {
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| 232 | show_lines(file, line_min, line_max);
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| 233 | source_file_free(mrb, file);
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| 234 | return MRB_DEBUG_OK;
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| 235 | }
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| 236 | else {
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| 237 | printf("Invalid source file named %s.\n", filename);
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| 238 | return MRB_DEBUG_INVALID_ARGUMENT;
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| 239 | }
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| 240 | }
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