| 1 | /*
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| 2 | * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
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| 3 | * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
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| 4 | *
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| 5 | * Released under the terms of the GNU GPL v2.0.
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| 6 | */
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| 7 |
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| 8 | #include <string.h>
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| 9 | #include "lkc.h"
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| 10 |
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| 11 | /* file already present in list? If not add it */
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| 12 | struct file *file_lookup(const char *name)
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| 13 | {
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| 14 | struct file *file;
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| 15 |
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| 16 | for (file = file_list; file; file = file->next) {
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| 17 | if (!strcmp(name, file->name))
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| 18 | return file;
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| 19 | }
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| 20 |
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| 21 | file = malloc(sizeof(*file));
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| 22 | memset(file, 0, sizeof(*file));
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| 23 | file->name = strdup(name);
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| 24 | file->next = file_list;
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| 25 | file_list = file;
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| 26 | return file;
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| 27 | }
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| 28 |
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| 29 | /* write a dependency file as used by kbuild to track dependencies */
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| 30 | int file_write_dep(const char *name)
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| 31 | {
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| 32 | struct file *file;
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| 33 | FILE *out;
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| 34 |
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| 35 | if (!name)
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| 36 | name = ".config.cmd";
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| 37 | out = fopen(".config.tmp", "w");
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| 38 | if (!out)
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| 39 | return 1;
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| 40 | fprintf(out, "deps_config := \\\n");
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| 41 | for (file = file_list; file; file = file->next) {
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| 42 | if (file->next)
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| 43 | fprintf(out, "\t%s \\\n", file->name);
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| 44 | else
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| 45 | fprintf(out, "\t%s\n", file->name);
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| 46 | }
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| 47 | fprintf(out, "\n.config include/config.h: $(deps_config)\n\n$(deps_config):\n");
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| 48 | fclose(out);
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| 49 | rename(".config.tmp", name);
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| 50 | return 0;
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| 51 | }
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| 52 |
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| 53 |
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| 54 | /* Allocate initial growable sting */
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| 55 | struct gstr str_new(void)
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| 56 | {
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| 57 | struct gstr gs;
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| 58 | gs.s = malloc(sizeof(char) * 64);
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| 59 | gs.len = 16;
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| 60 | strcpy(gs.s, "\0");
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| 61 | return gs;
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| 62 | }
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| 63 |
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| 64 | /* Allocate and assign growable string */
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| 65 | struct gstr str_assign(const char *s)
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| 66 | {
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| 67 | struct gstr gs;
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| 68 | gs.s = strdup(s);
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| 69 | gs.len = strlen(s) + 1;
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| 70 | return gs;
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| 71 | }
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| 72 |
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| 73 | /* Free storage for growable string */
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| 74 | void str_free(struct gstr *gs)
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| 75 | {
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| 76 | if (gs->s)
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| 77 | free(gs->s);
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| 78 | gs->s = NULL;
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| 79 | gs->len = 0;
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| 80 | }
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| 81 |
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| 82 | /* Append to growable string */
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| 83 | void str_append(struct gstr *gs, const char *s)
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| 84 | {
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| 85 | size_t l = strlen(gs->s) + strlen(s) + 1;
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| 86 | if (l > gs->len) {
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| 87 | gs->s = realloc(gs->s, l);
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| 88 | gs->len = l;
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| 89 | }
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| 90 | strcat(gs->s, s);
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| 91 | }
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| 92 |
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| 93 | /* Append printf formatted string to growable string */
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| 94 | void str_printf(struct gstr *gs, const char *fmt, ...)
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| 95 | {
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| 96 | va_list ap;
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| 97 | char s[10000]; /* big enough... */
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| 98 | va_start(ap, fmt);
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| 99 | vsnprintf(s, sizeof(s), fmt, ap);
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| 100 | str_append(gs, s);
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| 101 | va_end(ap);
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| 102 | }
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| 103 |
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| 104 | /* Retreive value of growable string */
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| 105 | const char *str_get(struct gstr *gs)
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| 106 | {
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| 107 | return gs->s;
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| 108 | }
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| 109 |
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