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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122// SPDX-License-Identifier: GPL-2.0/* * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org> * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org> */
#include <stdarg.h>#include <stdlib.h>#include <string.h>
#include <hash.h>#include <hashtable.h>#include <xalloc.h>#include "lkc.h"
/* hash table of all parsed Kconfig files */static HASHTABLE_DEFINE(file_hashtable, 1U << 11);
struct file { struct hlist_node node; struct { const char *name; int lineno; } parent; char name[];};
static void die_duplicated_include(struct file *file, const char *parent, int lineno){ fprintf(stderr, "%s:%d: error: repeated inclusion of %s\n" "%s:%d: note: location of first inclusion of %s\n", parent, lineno, file->name, file->parent.name, file->parent.lineno, file->name); exit(1);}
/* file already present in list? If not add it */const char *file_lookup(const char *name, const char *parent_name, int parent_lineno){ const char *parent = NULL; struct file *file; size_t len; int hash = hash_str(name);
if (parent_name) parent = file_lookup(parent_name, NULL, 0);
hash_for_each_possible(file_hashtable, file, node, hash) if (!strcmp(name, file->name)) { if (!parent_name) return file->name; die_duplicated_include(file, parent, parent_lineno); }
len = strlen(name); file = xmalloc(sizeof(*file) + len + 1); memset(file, 0, sizeof(*file)); memcpy(file->name, name, len); file->name[len] = '\0'; file->parent.name = parent; file->parent.lineno = parent_lineno;
hash_add(file_hashtable, &file->node, hash);
str_printf(&autoconf_cmd, "\t%s \\\n", name);
return file->name;}
/* Allocate initial growable string */struct gstr str_new(void){ struct gstr gs; gs.s = xmalloc(sizeof(char) * 64); gs.len = 64; gs.max_width = 0; strcpy(gs.s, "\0"); return gs;}
/* Free storage for growable string */void str_free(struct gstr *gs){ free(gs->s); gs->s = NULL; gs->len = 0;}
/* Append to growable string */void str_append(struct gstr *gs, const char *s){ size_t l; if (s) { l = strlen(gs->s) + strlen(s) + 1; if (l > gs->len) { gs->s = xrealloc(gs->s, l); gs->len = l; } strcat(gs->s, s); }}
/* Append printf formatted string to growable string */void str_printf(struct gstr *gs, const char *fmt, ...){ va_list ap; char s[10000]; /* big enough... */ va_start(ap, fmt); vsnprintf(s, sizeof(s), fmt, ap); str_append(gs, s); va_end(ap);}
/* Retrieve value of growable string */char *str_get(const struct gstr *gs){ return gs->s;}